Cap11
antagonist.
A muscle whose action opposes that of the prime mover is known as a(n)
Buccinator
A nursing baby is using what muscle to suckle?
triceps brachii.
All of the following muscles that move the glenohumeral joint insert on the humerus except the
Gastrocnemius
All of the muscles listed, except one, are innervated by the deep fibular nerve. Select the exception.
Supraspinatus
All of these muscles, except one, adduct the arm. Select the exception.
Pectoralis major
All of these muscles, except one, have their origin on the scapula. Select the exception.
subscapularis
As a baseball pitcher winds up to throw, he medially rotates his arm by contracting his
Biceps brachii
Besides the supinator, which other muscle is a powerful supinator of the forearm?
inspiration
Contraction of the diaphragm assists in
ankle, foot, and toes.
Crural muscles are those that move the
relax
For defecation to take place, the puborectalis must
biceps brachii is the agonist and triceps brachii is the antagonist.
For elbow flexion,
lateral flexion of the head to the right and rotation of the head to the left.
If the right sternocleidomastoid contracts unilaterally, the resulting movement will be
Palmar interossei
If you had all of your fingers (including the thumb) spread out wide, which muscle or group would bring fingers 2-5 together?
Adductor pollicis
If you had all of your fingers (including the thumb) spread out wide, which muscle or group would bring your thumb toward your first finger?
soleus.
If you were to remove the gastrocnemius muscle, you would expose the
The insertion
In the limbs, which tends to be a muscle's more distal attachment?
Bulbospongiosus
In the male, which muscle ejects urine or semen, compresses the base of the penis, and helps in formation of an erection?
flex, medial
Many of the muscles in the anterior compartment of the forearm work to _______ the wrist, and they have their origin on the _______ epicondyle of the humerus.
os coxae.
Most muscles that move the thigh originate on the
axial skeleton and insert on the clavicle and scapula.
Muscles of the pectoral girdle originate on the
anterior
Muscles that protract the scapula would be ________ thoracic muscles.
infrahyoid
Muscles whose functions are to depress either the hyoid bone or the thyroid cartilage of the larynx are the _________ muscles.
lumbricals
Of the following, the muscle or group not originating from the calcaneus is the
genioglossus
Of the muscles listed, the only one that inserts on the hyoid bone is the
Coccygeus
Of the muscles listed, which is the only one not innervated by the pudendal nerve?
Latissimus dorsi Pectoralis major
Of the muscles that move the glenohumeral joint, two originate on the axial skeleton. Which ones?
Swallowing
Pharyngeal constrictor muscles are especially important for which function?
serratus anterior
The _________ is a large, saw-toothed, flat, fan-shaped muscle positioned between the ribs and the scapula.
intrinsic
The __________ muscles of the foot both originate and insert within the foot.
pubic symphysis.
The anterior border of the perineum is the
common extensor tendon of the posterior forearm muscles.
The condition known as "tennis elbow" is caused by trauma or overuse of the
transversus abdominis
The deepest of the abdominal muscles are the _________ muscles.
the tongue.
The ending "glossus" on the name of a muscle refers to
superficial layer of the posterior compartment of the forearm.
The extensor digitorum muscle is found in the
anterior compartment of the leg.
The extensor hallucis longus is located in the
deep layer of the posterior compartment of the leg, and it flexes toes 2-5.
The flexor digitorum longus is located in the
Wrinkling the brow (forehead)
The frontal belly of the occipitofrontalis muscle causes what action?
extend the thigh and flex the leg.
The function of the biceps femoris is to
dorsal, plantar
The intrinsic foot muscles form a __________ group and a _________ group.
Pouting
The mentalis muscle has what action?
iliocostalis
The most laterally placed of the three erector spinae components, the ___________ group, is composed of three parts: cervical, thoracic, and lumbar.
diaphragm
The muscle that forms a partition between the thoracic and abdominal cavities is the
dorsiflex the foot and extend the toes.
The muscles of the anterior compartment of the leg function to
biceps brachii brachialis brachioradialis
The principal elbow flexors located on the anterior side of the humerus are the
Supinator
The pronator teres and pronator quadratus cause pronation of the forearm. What muscle opposes this movement?
shape
The rhomboid muscle is named for its
Puborectalis
The superficial layer of the urogenital triangle contains three muscles. Select the exception.
the muscle has two tendons of origin.
The word "biceps" in the name of a muscle refers to the fact that
Buccinator
There are four muscles of mastication. Select the exception.
Levator scapulae
There are three anterior thoracic muscles. Select the exception.
Gluteus medius: abducts the thigh
There are three gluteal muscles. Select the one that is correctly matched with its primary action.
Dorsal interossei
These figures show the intrinsic muscles of the right foot. What muscle does number 3 indicate?
Flexor digitorum brevis
These figures show the intrinsic muscles of the right foot. What muscle or group does number 1 indicate?
Lumbricals
These figures show the intrinsic muscles of the right foot. What muscle or group does number 2 indicate?
External intercostals
These muscles elevate the ribs and have their origin on the inferior border of the superior rib and their insertion on the superior border of the inferior rib.
Gastrocnemius and soleus
These two muscles are known as the triceps surae and together are the most powerful plantar flexors of all of the leg muscles.
Masseter
This figure shows a lateral view of the muscles of facial expression. What muscle does number 1 indicate?
Temporalis
This figure shows a lateral view of the muscles of facial expression. What muscle does number 2 indicate?
Buccinator
This figure shows a lateral view of the muscles of facial expression. What muscle does number 3 indicate?
Platysma
This figure shows a lateral view of the muscles of facial expression. What muscle does number 4 indicate?
Sternocleidomastoid
This figure shows a lateral view of the muscles of facial expression. What muscle does number 5 indicate?
Soleus
This figure shows a lateral view of the right leg. What muscle does number 2 indicate?
Fibularis longus
This figure shows a lateral view of the right leg. What muscle does number 3 indicate?
Tibialis anterior
This figure shows a lateral view of the right leg. What muscle is indicated by the number 1?
Vastus lateralis
This figure shows a lateral view of the right thigh. What muscle does number 1 indicate?
Superior oblique
This figure shows a medial view of the right eye. What muscle does number 2 indicate?
Superior rectus
This figure shows a medial view of the right eye. What muscle does number 3 indicate?
Trochlea
This figure shows a medial view of the right eye. What structure does number 4 indicate?
Lumbrical
This figure shows a palmar view of the hand. What muscle does number 1 indicate?
Abductor pollicis brevis
This figure shows a palmar view of the hand. What muscle does the number 2 indicate?
Semimembranosus
This figure shows a posterior view of the right thigh. What muscle does number 1 indicate?
Semitendinosus
This figure shows a posterior view of the right thigh. What muscle does number 2 indicate?
Adductor magnus
This figure shows a posterior view of the right thigh. What muscle does number 3 indicate?
Brachioradialis
This figure shows an anterior view of the arm muscles. What muscle does number 1 indicate?
Optic canal
This figure shows an anterior view of the right orbit. What feature does number 4 indicate?
Lateral rectus
This figure shows an anterior view of the right orbit. What muscle does number 1 indicate?
Medial rectus
This figure shows an anterior view of the right orbit. What muscle does number 2 indicate?
Gracilis
This figure shows an anterior view of the right thigh. What muscle does number 1 indicate?
Brachialis
This figure shows superficial and deep arm muscles. What muscle does number 1 indicate?
Coracobrachialis
This figure shows superficial and deep arm muscles. What muscle does number 2 indicate?
Platysma
This figure shows the muscles of facial expression. What muscle does number 1 indicate?
Nasalis
This figure shows the muscles of facial expression. What muscle does number 2 indicate?
Orbicularis oculi
This figure shows the muscles of facial expression. What muscle does number 3 indicate?
Masseter
This figure shows the muscles of facial expression. What muscle does number 4 indicate?
Buccinator
This figure shows the muscles of facial expression. What muscle does number 5 indicate?
Orbicularis oris
This figure shows the muscles of facial expression. What muscle does number 6 indicate?
Levator labii superioris
This figure shows the muscles of facial expression. What muscle does number 7 indicate?
Mentalis
This figure shows the muscles of facial expression. What muscle does number 8 indicate?
Depressor labii inferioris
This figure shows the muscles of facial expression. What muscle does number 9 indicate?
External intercostal
This figure shows the muscles of respiration. What muscle does number 2 indicate?
Diaphragm
This figure shows the muscles of respiration. What muscle does number 4 indicate?
Internal intercostals
This figure shows the muscles of respiration. What muscles are indicated by number 1?
Scalenes
This figure shows the muscles of respiration. What muscles are indicated by number 3?
Rectus abdominis
This figure shows the muscles of the abdominal wall. What muscle or feature does number 2 indicate?
Linea alba
This figure shows the muscles of the abdominal wall. What muscle or feature does number 3 indicate?
Trapezius
This figure shows the muscles of the anterior neck. What muscle does number 1 indicate?
Sternohyoid
This figure shows the muscles of the anterior neck. What muscle does number 2 indicate?
Sternocleidomastoid
This figure shows the muscles of the anterior neck. What muscle does number 3 indicate?
Pectoralis major
This figure shows the muscles of the anterior trunk. What muscle does number 1 indicate?
Pectoralis minor
This figure shows the muscles of the anterior trunk. What muscle does number 3 indicate?
Trapezius
This figure shows the muscles of the posterior trunk. What muscle does number 1 indicate?
Infraspinatus
This figure shows the muscles of the posterior trunk. What muscle does number 2 indicate?
Rhomboid major
This figure shows the muscles of the posterior trunk. What muscle does number 3 indicate?
Hyoglossus
This figure shows the muscles that move the tongue. What muscle does number 1 indicate?
Genioglossus
This figure shows the muscles that move the tongue. What muscle does number 2 indicate?
Stylohyoid
This figure shows the muscles that move the tongue. What muscle does number 3 indicate?
Pronator teres
This figure shows the right anterior forearm. What muscle does number 1 indicate?
Palmaris longus
This figure shows the right anterior forearm. What muscle does number 2 indicate?
Flexor carpi radialis
This figure shows the right anterior forearm. What muscle does number 3 indicate?
Multifidus
This muscle extends and rotates the vertebral column toward the opposite side of the body. Its origin is on the sacrum and transverse processes of each vertebra and its insertion is the spinous processes of more superior vertebrae.
Sternocleidomastoid
This muscle has its origin on the manubrium and sternal end of the clavicle and its insertion on the mastoid process.
Plantar aponeurosis
This thick sheet of fascia extends between the phalanges of the toes and the calcaneus, and also encloses the plantar muscles of the foot.
Fibrous, perpendicular insertions between successive sheets or blocks of muscle
What are tendinous intersections?
A thickened fibrous band of fascia
What is a retinaculum?
The perineum
What is the diamond-shaped region between the lower appendages called?
Latissimus dorsi
What muscle is known as the "swimmer's muscle"?
Gastrocnemius and soleus
What two muscles insert on the calcaneal tendon?
flexor digitorum.
When a child raises her hand to show you she is five years old, she is using all of the following muscles except the
orbicularis oculi.
When a person blinks, she is using her
Diaphragm
When contracted, this muscle causes expansion of the thoracic cavity and increases pressure in the abdominopelvic cavity. Its insertion is on a central tendon.
extension of the neck.
When the left and right splenius capitis contract together, the resulting movement is
The trochlear nerve
Which cranial nerve innervates the superior oblique muscle?
Lateral rectus
Which extrinsic eye muscle is innervated by the abducens nerve (CN VI)?
Superior oblique
Which extrinsic eye muscle moves through a pulleylike loop?
Thenar group
Which group of muscles forms a thick, fleshy mass at the base of the thumb?
Rectus femoris
Which is not one of the hamstring muscles?
Gluteus maximus
Which is one of the largest muscles in the body and the one most responsible for extending and laterally rotating the thigh?
Orbicularis oris
Which is the "kiss muscle" used for puckering the lips?
Sartorius
Which is the longest muscle of the body?
Popliteus
Which muscle "unlocks" the fully extended knee joint?
Genioglossus
Which muscle does not move the mandible?
Adductor longus
Which muscle does not originate on the ischial tuberosity?
Rectus abdominis
Which muscle forms the traditional "six-pack" of a well-toned abdominal wall?
Extensor digitorum brevis
Which muscle is not innervated by the plantar nerve?
External urethral sphincter
Which muscle is part of the urogenital diaphragm and constricts the urethra to voluntarily inhibit urination?
Tibialis anterior
Which muscle is the primary dorsiflexor of the foot at the ankle?
Triceps brachii
Which muscle is the prime extensor of the elbow joint?
Genioglossus
Which muscle is used for sticking out the tongue?
Plantar interossei
Which muscle or group is responsible for adduction of the toes?
Muscles of facial expression
Which muscles arise from the skull and often attach to the skin?
Muscles of mastication
Which muscles help us in the initial breakdown of food?
External oblique
Which of the abdominal muscles has its fibers running in an inferomedial direction?
Rectus abdominis
Which of the abdominal muscles is innervated by spinal nerves T7-T12?
External intercostals
Which of the following elevates the ribs?
Teres major
Which of the following is not one of the rotator cuff muscles?
Rhomboid major
Which of the following muscles elevates and retracts (adducts) the scapula?
Biceps femoris
Which of the following muscles inserts on the head of the fibula?
Pronator teres
Which of the following muscles is not innervated by the radial nerve?
Quadriceps femoris
With three seconds left on the clock, Mia breaks free and scores the winning goal in her soccer game. Of the muscles listed, select the one with the primary action in extending the leg for kicking.
Deep layer
Within which layer of the anterior compartment of the forearm is the flexor pollicis longus located?
Tensor veli palatini
You have just disembarked from an airplane following a cross-country flight. You are experiencing difficulty in hearing and notice that your ears are plugged. To relieve the pressure you try "yawning" to clear the ear canal. It worked. What muscle was involved?
Left eye - lateral rectus, right eye - medial rectus
You hear a sharp noise to your left causing you to shift your eyes in that direction. Which muscles were responsible for your glance?
procerus muscle.
You just ran over a skunk on your way to class. The odor was overwhelming and in response you wrinkled your nose in disgust by contracting your
