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QuestionAnswer
Occipitofrontalis raises the eyebrows
Orbicularis oculi closes the eyelids and causes “crows feet” wrinkles in the skin at the lateral corners of the eye.
Orbicularis oris puckers the lips.
Buccinator flattens the cheeks. Trumpeter’s muscle. Orbicularis oris and buccinator are the kissing muscles
Zygomaticus smiling muscle.
Levator labii superioris sneering
Depressor anguli oris frowning
Mastication chewing
Intrinsic Tongue Muscles change the shape of the tongue
Extrinsic Tongue Muscles move the tongue.
Sternocleidomastoid lateral neck muscle and prime mover. Rotates and abducts the head
Erector spinae group of muscles on each side of the back. Responsible for keeping the back straight and the body erect.
External intercostals elevate the ribs during inspiration.
Internal intercostals contract during forced expiration
Abdominal wall muscles The muscles of the anterior abdominal wall flex and rotate the vertebral column, compress the abdominal cavity, and hold in the abdominal viscera.
Trapezius rotates scapula
Serratus anterior - pulls scapula anteriorly
Pectoralis major adducts and flexes the arm
Latissimus dorsi medially rotates, adducts, and powerfully extends the arm. “Swimmer muscles”
Deltoid attaches the humerus to the scapula and clavicle, and is the major abductor of the upper limb.
Triceps brachii extends the forearm. Occupies the posterior compartment of the arm.
Biceps brachii flexes the forearm. Occupies the anterior compartment of the arm.
Brachialis flexes forearm
Brachioradialis flexes and supinates the forearm
Retinaculum strong band of fibrous connective tissue that covers the flexor and extensor tendons and holds them in place around the wrist so that they do not “bowstring” during muscle contraction.
Flexor carpi flexes the wrist.
Extensor carpi extends the wrist
Flexor digitorum flexes the fingers.
Extensor digitorum extends the fingers.
diaphram accomplishes quiet breathing
flexor carpi flexws the wrist
on each side of the linea alba is what? rectus abdominus
neck muscle sternocleid omastoid
gastrocnemius ans soleus form calf muscles
the sarcomeres isthe basic strucyural an functional unity of what? muscle
trunk muscle erector spinal
trapezius rotates scapula
muscles that word in opposition to each other antagonists
what muscle is located between the metacarpols interossi
a thread like structure that extends from one end ofthe fiber to the other myofibrils
3 thoraic muscles xternal intercostal diapham and intercostals
sarcomeres join end to end to form what myofibrils
sartorius flexes the thigh
zygo maticus smiling muscle
gleueus maximus buttocks
two tounge muscles intrinsic and extrinsic
nerve cells that carry actions potiential to skeletal muscle fibers motor neurons
enlarge nerve terminal presyanatic terminal
secrete neurotransmitor acetylcholine
charge difference across the membrane resting membrane potential
brief reversal back of the charge action potiental
each branch that connects to the muscle forms what neuromuscular junctions
musce fiber will not respond to stimuelus reaches alevel called? threshold
tetany muscle remains contracted without relaxing
the fasciculis is composed of what single muscle cells? fibers
each muscle fiber is surrounding by what connective tissue sheath endomysium
muscles that work together to accomplish specific movement synergists
pectoralis major adducts and flexes the arm
each zline is an attachment site for what actin
in the center of each sarcomere is another light area called what? h zone
a single motor neuron and all the skeletal muscle fibers it intrevates is called what? motor unit
what is near the center of the cell? synapse
biceps brachii flexes the forearm
deltoid attaches the humerus to the scaoula and clavicle
brachialis flexes forearm
latissimus dorsi medially rotates, addusts, and powerfull extends the arm
serratus anterior pulls scapula anitierofly
extensor carpi extends the wrist
flexor digitorium flexes the fingers
4 pairs of mastification muscles 2 pairs of steroids, temporalis, and masseter
extrinsic tongue muscles moves the tongue
external inter costals elevate the ribs during inspiration
internal intercostals contract during forced expiration
2 major kinds of protein fibers actin myofilament and myosin myofibments
19 hand muscles located within the hand intrinsic hand muscles
extensor digitorium extends the fingers
each skeletal muscles is surronded by what connective tissues sheath epimysium
mastification chewing
depressor angui oris frowning
quad riceps femoris extends the leg
Created by: aadkins23295
 

 



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