Ch.11 assessment

When the term rectus appears in the name of a muscle, it indicates that it is a relatively small muscle it is a relatively large muscle it is circular in shape it is flat in shape the muscle fascicles run parallel to the midline of the body

the muscle fascicles run parallel to the midline of the body

The lateral (fibular) compartment of the leg contains two muscles that plantar flex and evert the foot: the fibularis (peroneus) longus and the fibularis (peroneus) brevis. True False

true

The muscles of facial expression insert onto the skin, so when they contract, they move skin rather than a joint. True False

true

Which list includes muscles that are responsible for facial expressions? deltoid, pectoralis major, serratus anterior rectus abdominis, internal oblique, transversus abdominis serratus anterior, external intercostals, internal intercostals levator scapulae, rhomboid minor, subscapularis zygomaticus major, risorius, platysma

zygomaticus major, risorius, platysma

The supinator muscle extends the forearm at the elbow joint. True False

False

The term quadriceps refers to the shape of a muscle, and indicates this muscle is shaped approximately like a square, with four corners. True False

False

The gluteus medius is a common site for intramuscular injections. True False

True

The intrinsic muscles of the foot have their origins and their insertions within the foot. True False

True

The mastoid process of the temporal bone is an important insertion point for muscles of the neck that move the head. True False

True

The quadriceps femoris muscle (made up of a group of four muscles) is the largest muscle of the body. True False

True

The suprahyoid muscles are involved with swallowing (deglutition), while the infrahyoid muscles return the hyoid to its pre-swallowing position, and also act on the thyroid cartilage (Adam's apple) of the larynx in the production of speech. True False

True

Which term best applies to a muscle that acts to move a bone away from the midline of the body? oblique synergist flexor abductor adductor

abductor

Muscle paralysis would lead to ___. hypertrophy atrophy spasms tics

atrophy

Which of the following pairs of muscles are agonist-antagonists (that is, one flexes and the other extends) the forearm? biceps brachii and brachioradialis brachialis and brachioradialis triceps brachii and anconeus biceps brachii and triceps brachii anconeus and supinator

biceps brachii and triceps brachii

The origin of the hyoglossus muscle is the mandible styloid process of temporal bone body of hyoid bone anterior surface of soft palate

body of hyoid bone

The diaphragm, a muscle involved with breathing, is innervated by the phrenic nerve, a major nerve of the thoracic spinal nerves. True False

false

A muscle that acts as a __________ stabilizes the origin of the prime mover so that the prime mover may act more efficiently. antagonist abductor fixator synergist agonist

fixator

The middle finger is the only finger that cannot be moved laterally by palmar interossei dorsal interossei lumbricals abductor digiti minimi

lumbricals

Which of the following is the strongest muscle of mastication? buccinator masseter temporalis medial pterygoid lateral pterygoid

masseter

All of the following are functions of the levator ani except supports and maintains position of pelvic viscera. functions as a sphincter at the anorectal junction. moves the coccyx in female during childbirth. constricts the urethra sphincter.

moves the coccyx in female during childbirth.

Muscles of the ____ assist in urination, defecation, erection of the penis or clitoris, and ejaculation. thorax abdomen perineum vertebral column none of these choices

perineum

The deep anterior forearm muscles insert on the __________. ulna phalanges metacarpals radius

phalanges

Exercise can produce a fashionable "six pack" of toned muscles. Which of the following muscles is involved in giving the appearance of this defined pack of muscles? external oblique internal oblique transversus abdominis rectus abdominis serratus anterior

rectus abdominis

Which of the following muscles is known as the "tailor's muscle" because it helps you cross your legs so that you could sit with the heel of one limb resting on the knee of the other limb (in centuries past, sitting with crossed legs was the way tailor's, makers of clothing, would sit to do their sewing). sartorius gracilis adductor longus vastus intermedius semitendinosus

sartorius

In a hiatus hernia, the stomach protrudes through which opening of the diaphragm? the caval opening the esophageal hiatus the mediastinum the aortic hiatus the inguinal hiatus

the esophageal hiatus

Muscles act on bones to produce movement. The bones act as levers and the joints act as __________. the load the resistance the fulcrum the force the effort

the fulcrum

Which of the following is not one of the quadriceps femoris group of muscles? 1. gracilis 2. sartorius 3. vastus medialis 4. vastus lateralis 1 only 2 only 3 only 4 only 1 and 2

1 and 2

Which of the following muscles act(s) to increase the size of the thoracic cavity during inhalation? 1. diaphragm 2. external intercostals 3. internal intercostals 1 only 2 only 3 only 1, 2 & 3 1 and 2

1 and 2

Which of the following muscles have an insertion on the xiphoid process? 1. rectus abdominis 2. internal and external obliques 3. transversus abdominis 1 only 2 only 3 only 1 and 3 2 and 3

1 and 3

Which of the following muscles act to stabilize the scapula, and would also, when contracted, pull the shoulders back (like a soldier at attention)? 1. trapezius 2. levator scapulae 3. rhomboid major and minor 1 only 2 only 3 only 1 & 2 2 & 4

3 only

Indicate which muscle shown in the figure below raises the eyelids A diagram of a person's face, showing bone, muscles, and skin. Muscles are labeled as follows. A: located directly on and just below the eyelid. B: located on the cheek next to the nose. C: located from the outer lip back toward the ear. D: located in the middle of the cheek, reaching from the lip to the ear. E: located over the eyeball. A B C D E

E

This fleshy triangular muscle forms the shoulder muscle. serratus anterior pectoralis major deltoid biceps brachii

deltoid

Which of these muscles has a major role in opening the mouth (depressing the mandible)? masseter temporalis medial pterygoid digastric omohyoid

digastric

Which of the following homeostatic functions involve both skeletal and smooth muscle in the reproductive system? ejection of semen regulation of menstrual blood flow from the uterus movement of oocyte along the uterine tube orgasm during intercourse

ejection of semen

Muscle fascicles can be arranged in one of several patterns. Which of the following patterns is not an example of the arrangement of fascicles in a muscle? pennate elliptical fusiform triangular circular

elliptical

Improper lifting of a heavy load (such as trying to lift a box of books from its position on the floor), is most likely to cause painful back spasms in which muscle(s)? splenius capitis splenius cervicis longissimus thoracis erector spinae scalene

erector spinae

The __________ muscle(s) is (are) the primary extensor muscle(s) of the vertebral column. transversospinales erector spinae spinalis thoracis scalene group rotators

erector spinae