A&P chapter 11
A lever consists of
a rigid structure and a fulcrum.
Which of the following is not innervated by the lateral plantar nerve?
abductor hallucis
Identify the muscle labeled "11."
biceps femoris
The temporalis muscle passes through the
zygomatic arch.
The muscle that raises the corners of the mouth as when smiling is the ________ muscle.
zygomaticus major
The muscle that retracts and elevates the upper lip is the ________ muscle.
zygomaticus minor
A(n) ________ is a muscle whose contraction is chiefly responsible for producing a particular movement
prime mover
Identify the muscle labeled "7."
pronator teres
Which of the following describes the action of the serratus anterior?
protracts the shoulder, abducts and medially rotates the scapula
The adductor brevis has its origin on the
pubis
The iliac crest is the origin of the
quadratus lumborum.
The four prominent muscles on the anterior thigh comprise the ________ muscle group.
quadriceps femoris
In a convergent muscle, fascicles converge on a common attachment site that may be a slender band of collagen fibers known as a(n)
raphe
Muscles with fibers that run parallel to the long axis of the body are called
rectus
Identify the muscle labeled "19."
rectus abdominis
Each of the following terms is a descriptive term for a muscle's action except
sartorius
Identify the muscle labeled "25."
sartorius
The long strap-like muscle on the anterior thigh is the ________ muscle.
sartorius
The only knee flexor that originates superior to the acetabulum is the
sartorius
Contracting the gastrocnemius muscles to elevate the body on the toes involves a ________ lever.
second-class
The mentalis muscle inserts on the
skin of the chin.
Which of the following is innervated by the sciatic nerve?
soleus
Tom, a trumpet player, asks you which muscles he should develop in order to be a better trumpeter. What would you tell him?
the buccinator and orbicularis oris
The names of the muscles can indicate all of the following except
the collagen content of the muscle.
Which of the following is the insertion of the pectoralis major?
the greater tubercle of the humerus
The insertion of the flexor hallucis longus is
the inferior surface of the distal phalanx of the great toe.
The ________ extends the neck.
trapezius
The muscle that inserts on the acromion and scapular spine is the
trapezius
The muscle that extends the forearm when doing push-ups is the
triceps
The infraspinatus has its insertion on the
tuberosity of the radius.
Which muscle is named for either shape or size?
All of the above are named for shape or size.
The eye muscles include which of the following muscles?
All of the answers are correct.
Which of the following is a spinal flexor?
All of the answers are correct.
Which of the following originates on the medial epicondyle of the humerus?
All of the answers are correct.
Which of these muscles is a member of the quadriceps group?
All of the answers are correct.
Which of these muscles produces lateral rotation at the hip?
All of the answers are correct.
________ muscle fibers pull in different directions, permitting different actions depending on stimulation.
Convergent
The whole deltoid muscle ________ the humerus.
abducts
The muscle that adducts the thumb is the
adductor pollicis.
A type of muscle whose action opposes that of another muscle is called a(n)
antagonist
The insertion end of the biceps brachii muscle of the anterior upper arm is
at the distal end of the muscle.
Which of the following does not originate on the humerus?
biceps brachii
Which of the following are members of the hamstring group?
biceps femoris, semitendinosus, and semimembranosus
The quadriceps group includes all of the following except the
biceps femoris.
Figure 11-1 Major Anterior Skeletal Muscles Use Figure 11-1 to answer the following questions: Identify the muscle labeled "20."
brachioradialis
Which of the following muscles functions to expel urine or semen in males?
bulbospongiosus
A muscle that inserts on the body of the mandible is probably involved in
chewing
In a ________ muscle, the fascicles are concentrically arranged around an opening.
circular
Muscles that guard entrances and exits of internal passageways are ________ muscles.
circular
The levator ani inserts on the
coccyx
Which of the following is the origin of the bulbospongiosus in the female?
collagen sheath at the base of the clitoris
The muscle(s) that adduct(s) the humerus is/are the
coracobrachialis and latissimus dorsi.
Identify the muscle labeled "2."
deltoid
The powerful abductor muscle of the upper arm is the
deltoid
What is the action of the subclavius?
depresses and protracts the shoulder
The action of the masseter muscle is to ________ the mandible.
elevate
Which of the following describes the action of the digastric muscle?
elevates the larynx and depresses the mandible
The origin of the frontalis muscle is the
epicranial aponeurosis.
The thick, flat sheet of tendon deep to the scalp is called the
epicranial aponeurosis.
Muscles that insert on the olecranon process of the ulna can act to
extend the forearm.
If you bruised your gluteus maximus, you would expect to experience discomfort when
extending and laterally rotating the hip.
The median nerve innervates all of the following except the
extensor carpi ulnaris.
Identify the muscle labeled "17."
extensor digitorum
Which of the following muscles compresses the abdomen?
external oblique, rectus abdominis, and transverse abdominis
Muscles visible at the body surface often called
externus
Muscles that position or stabilize an organ are called
extrinsic
The stylohyoid is innervated by which nerve?
facial
The Sartorius is innervated by which nerve?
femoral
Tom is having difficulty with plantar flexion and eversion of his foot. Which muscle is most likely involved in this problem?
fibularis longus
When the fulcrum is located between the load and the force, it is called a ________ lever.
first-class
A muscle that assists another by preventing movement at another joint is called a(n)
fixator
Jill suffers a severe cut that severs the tendon that attaches the insertion of the flexor carpi ulnaris. As a result of this injury, what action is difficult for her to perform?
flex and adduct her hand
Damage to the pectoralis major would interfere with a person's ability to
flexion of the humerus.
Which of the following muscles is innervated by the ulnar nerves?
flexor carpi ulnaris
Identify the muscle labeled "12."
gastrocnemius
Identify the muscle labeled "27."
gastrocnemius
In assessing a stroke patient, you ask her to stick out (protract) her tongue. You note that it deviates to one side. You suspect that damage to the neural control of the ________ muscle has occurred
genioglossus
Which of the following does not control flexion of the hip?
gluteus maximus
The muscle that inserts on the iliotibial tract and gluteal tuberosity of the femur is the
gluteus maximus.
The inferior ramus of the pubis is the origin and the medial tibia is the insertion of the ________ muscle
gracilis
The muscle group on the posterior thigh is called the ________ group.
hamstring
Muscles including the term capitis would be found within or attached to the
head
Which of the following muscles has its origin on the hyoid and inserts on the tongue?
hyoglossus
Identify the structure labeled "9."
iliotibial tract
The band of collagen fibers that laterally braces the knee is the
iliotibial tract.
The ________ muscle allows you to look down.
inferior rectus
Identify the muscle labeled "3."
infraspinatus
The end of a muscle that is attached to the point that moves when the muscle contracts is called the
insertion
The fulcrum of a lever system is the
joint
Ryan hears a loud noise and quickly turns his eyes sideways in the direction of the sound. To accomplish this action he must use his ________ muscles
lateral and medial rectus
Identify the muscle labeled "6."
latissimus dorsi
All of the following are innervated by the facial nerve (N VII) except for the ________ muscle
levator palpebrae superioris
The ________ muscle is the strongest jaw muscle.
masseter
Which of the following is not primarily a muscle of facial expression?
masseter
The sternocleidomastoid inserts on the
mastoid process of the temporal bone.
Medial rotation of the eyeball is performed by the ________ muscle.
medial rectus
Pam's daughter is born cross-eyed. As she grows, the problem does not become any better. Her physician suggests cutting an eye muscle to bring the eyes into a more normal position. Which muscle will he cut?
medial rectus
Muscles located close to the midline of the body may be called
medialis
The temporoparietalis muscle acts to
move the external ear.
Individuals who are engaged in repetitive hand movements such as typing or playing the piano may suffer wrist pain, especially during palmar flexion. All of the following are true concerning this condition except that it
never causes muscle weakness.
Muscles with fibers that run at an angle to the long axis of the body are called
oblique
the adductor longus is innervated by which nerve?
obturator
The inferior rectus is innervated by which nerve?
oculomotor
Which of the following is the insertion of the triceps brachii?
olecranon process of the ulna
Each of the following muscles is involved in the process of chewing or manipulating food in the mouth except the
omohyoid
The "kissing muscle" that purses the lips is the
orbicularis oris.
The end of a muscle that remains stationary when the muscle contracts is called the
origin
Which of these is true about the muscle named levator palpebrae superioris?
originates at the back of the orbit and raises the upper eyelid
The muscle that elevates the tongue is the
palatoglossus
Which of the following is not a type of fascicle arrangement?
palmate
Most of the skeletal muscles in the body are ________ muscles.
parallel
The type of muscle whose functional characteristics most closely resemble those of its muscle fibers is the ________ muscle.
parallel
Which of the following is not a pennate muscle?
pectoralis
All of the following originate on the scapula except the
pectoralis major.
In a ________ muscle, the muscle fibers and fascicles lie in a slanted or oblique position to the tendon.
pennate
The anterior muscle of facial expression that inserts widely on the periosteum of the mandible is the
platysma
Which of the following is not an extrinsic eye muscle?
rectus abdominis
Which of the following muscles has its insertion on the sternum?
rectus abdominis
During abdominal surgery, the surgeon makes a cut lateral to the linea alba. The muscle that would be cut is the
rectus abdominis.
The muscle that originates from the superior surface of the pubis around the symphysis is the
rectus abdominis.
Muscles of the rotator cuff include all of the following except the
rhomboid
The spinous processes of the upper thoracic vertebrae are the origin of the
rhomboid major and the trapezius.
Identify the muscle labeled "15."
sternocleidomastoid
The muscle that elevates the larynx is the ________ muscle.
stylohyoid
Which of the following does not depress the hyoid bone?
stylohyoid
Muscles visible at the body surface are often called
superficialis
Which eye muscle sends its tendon of origin through a pulley or trochlea before inserting on the globe?
superior oblique
The ________ allows you to look up.
superior rectus
Which of the following controls abduction at the shoulder?
supraspinatus
A muscle that assists the muscle that is primarily responsible for a given action is a(n)
synergist
Which of these phrases most aptly describes "muscle insertion"?
tendon attachment that moves
Muscles that laterally rotate the thigh include all of the following except the
tensor fasciae latae.
Which of the following controls adduction at the shoulder?
teres major
The most common lever systems in the body are those that have the applied force between the fulcrum and the load. These are called ________ levers.
third-class
Identify the muscle labeled "11."
tibialis anterior
A muscle that dorsiflexes the foot is the
tibialis anterior.
A muscle whose name ends in the suffix -glossus would be found within or attached to the
tongue
The scalenes have their origin on the
transverse and costal processes of cervical vertebrae.
Muscles with fibers that run perpendicular to the long axis of the body are called
transversus
Figure 11-1 Major Anterior Skeletal Muscles Use Figure 11-1 to answer the following questions: Identify the muscle labeled "1."
trapezius
Figure 11-2 Major Posterior Skeletal Muscles Use Figure 11-2 to answer the following question Identify the muscle labeled "1."
trapezius