Muscular System (Qs from Lab)

epimysium

the outermost layer of connective muscle tissue is the

myosin

thick myofibril filament of a sarcomere is composed of the protein

agonist

the muscle primarily responsible for an action

motor unit

the neuron and the msucle fibers it innervates

sarcomere

the functional contractile unit of a muscle fiber (cell) is the

fascicles

bundles of muscle fibers

false

the action of a particular muscle is always the same

true

a synergistic muscle contraction assists the agonist

true

the plasma membrane of a muscle fiber (cell) is called the sarcolemma

mandible

muscles of mastication are all inserted on the

platysma

muscles of mastication include the following EXCEPT the

in the skin

facial expressions are so variable partly because many facial muscles are inserted

sternocleidomastoid

which of the following muscles does NOT move the hyoid bone

sternocleidomastoid

flecion of the head and neck is an action of the __ muscle

nasalis

which of the ff muscles is the most visible from an anterior view of a person in anatomical position

facial

the muscles of facial expresision are innervated by the __ nerve

masseter

which of the ff is NOT a muscle that moves the head and neck

scapula

chest and shoulder muscles that move the arm at the shoulder join have insertions on the

radius or ulna

muscles located in the arm that move the forearm at the elbow joint have insertions on the

rectus abdominis

the major muscle of respiration include all of the following EXCEPT the __

scapula

rotator cuff muscles all have origins on the

teres major

which of the following is NOT a rotator cuff muscle

proximal to

the belly of the muscle is usually __ the region pulled

anterior superficial region of the forearm

the belly of the flexor digitorum profundus muscl eis located in the

false

there are more muscles that moce the forearm han move the hand

true

the action of the brachialis muscle is flexion of the elboqw joint

true

flexor and extensor muscles of the forearm act to move the hand

quadratus lumborum

which of the ff muscles is NOT part of the erector spinae grp?

extend the spine

the abdominal wall muscle possess the ff functions EXCEPT

rectus abdominis

the adbominal muscle nearest the midline is the __

bulbospongiosus

which of the following muscle would be most important in relation to vaginal delivery?

contain muscle fibers in 4 diff directions

the 4 muscles of the abdominal wall

peirnium

the anterior urogenital triangle and posterior anal triangle make up the __

semispinalis capitis

which of the ff muscles functions to extend and rotate the head and neck

true

rhe iliocostalis represents the lateral muscle grp of the erector psinae

false

the pelvic floor muscles are all arraged on a single superficial layer

palpation

the technique of examining surface features w hands and fingers is called

bone

soft issues include the following EXCEPT

jugular notch

which of the following is a bony feature of the upper torso

vastus lateralis

which of the ff is a soft tissue a feature of lower limb?

function

palpation enables us to determine all of the ff characteristics of a structure EXCEPT

true

the laryngeal prominence can be palpated in the anterior neck

false

the linea alba is a feature of the posterior torso

true

it is important that healthcare professionals have knowledgeof surface anatomy and pratice in palpation