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ANAT1005 sem 2 2020 > skeletal muscle > Flashcards

skeletal muscle Flashcards

1
Q

what are the connective tissue elements of skeletal muscle ?

A

The epimysium - around whole muscle

perimysium - around a fascicle

endomysium - around fibres

the connective tissue sheaths form the tendon

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2
Q

from large to small what are the levels of organisation in a muscle ?

A

whole muscle, fascicle, fibre, myofibril, sarcomere, and myofilament

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3
Q

what are the muscles of mastication?

A 
masseter
temporalis
medial pterygoid
lateral pterygoid
buccinator
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4
Q

what are the deep back muscles?

A 
splenius 
erector spinae
iliocostalis
longissimus
spinalis
semispinalis
quadratus lumborum
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5
Q

what are the deep muscles of the thorax used in breathing?

A

external intercostals
internal intercostals
diaphragm

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6
Q

what are the muscles of the anterior and lateral abdominal wall ?

A

external oblique
internal oblique
transversus abdominius
rectus abdominis

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7
Q

what are the muscle of the pelvic diaphragm ?

A

levator ani

coccygeus

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8
Q

what are the muscles of the anterior thorax?

A

Pectoralis minor
serratus anterior
subclavius

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9
Q

muscles of the posterior thorax?

A

trapezius
levator scapulae
rhomboids

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10
Q

what are the muscles crossing the shoulder joint ?

and what movements of the arm do they produce?

A 
pectoralis major (flexion)(adduction)
deltoid  (flexion)(extension) (abduction)
latissimus dorsi (extension)(adduction)
teres major
rotaror cuff muscles
(subscapularis,
supraspinatus, 
infraspinatus) -( rotation)
teres minor (extension)
coracobrachialis (flexion)
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11
Q

what muscles cross the elbow joint ?

A

posterior
triceps brachii
anconeus
brachioradialis

anterior
biceps brachii
brachialis

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12
Q

what are the superficial muscles of anterior compartment of forearm ?

A 
pronator teres
flexor carpi radialis
palmaris longus 
flexor carpi ulnaris
flexor digitorum superficialis
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13
Q

what are the deep muscles of anterior compartment of forearm ?

A

flexor pollicis longus
flexor digitorum profundus
pronator quadratus

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14
Q

what are the superficial muscles of posterior compartment of forearm ?

A 
brachioradialis
extensor carpi radialis longus 
extensor carpi radialis brevis
extensor digitorum 
externsor carpi ulnaris
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15
Q

what are the deep muscles of posterior compartment of forearm ?

A

supinator
abductor pollicis longus
extensor pollicis brevis and longus
extensor indicis

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16
Q

what are the muscles of the anterior compartment of thigh?

A 
sartorius
quadriceps femoris 
rectus femoris
vastus lateralis 
vastus intermedius
17
Q

what are the muscles of the medial compartment of thigh?

A 
pectineus
gracilis
adductors;
adductor longus
adductor brevis
adductor magnus
18
Q

what are the gluteal muscles ?

A

gluteus maximus
gluteus medius
gluteus minimus

19
Q

what are the muscles of the posterior compartment of thigh?

A

hamstrings
biceps femoris
semitendinosus
semimembranous

20
Q

what are the lateral rotator muscles of the thigh

A 
piriformis
obturator externus
obturator internus
gemellus
qudratus femoris
21
Q

what are the muscles of the anterior compartment of leg?

A

tibialis anterior
extensor digitorum longus
fibularis tertius
extensor hallucis longus

22
Q

what are the muscles of the lateral compartment of leg

A

fibularis longus

fibularis brevis

23
Q

what are the superficial muscles of posterior compartment of leg?

A

triceps surae
gastroncnemius
soleus
plataris

24
Q

what are the deep muscles of posterior compartment of leg?

A

popliteus
flexor digitorum longus
flexor hallucis longus
tibialis posterior

25
Q

what are the muscles on the dorsum of foot?

A

extensor digitorum brevis

26
Q

what are the muscles on the sole of foot?

A

first layer (most superficial)
flexor digitorum brevis
abductor hallucis
abductor digiti minimi

second layer
flexor accessorius
lumbricals

third layer
flexor hallucis brevis
adductor hallucis
flexor digiti minimi brevis

fourth layer (deepest)
plantar and dorsal interossei
27
Q

what are the muscles of the scalp?

A

occipitofrontallis
frontal belly
occipital belly

28
Q

what are branchiomeric muscles ?

A

muscles of facial expression, the chewing muscles, and the suprahyoid and pharyngeal constrictors

29
Q

The levator scapulae is a muscle that is named for its ____________

A

location

30
Q

what muscle draws the corner of the mouth laterally and compresses the cheek ?

A

The buccinators

31
Q

what muscles act at the end of swallowing to pull the hyoid bone and larynx inferiorly to their original position ?

A

Infrahyoid muscles

32
Q

The muscles that elevate the first two ribs and flex and rotate the neck are the ____________.

A

scalenes

33
Q

The posterior axillary fold is comprised of ____________.

A

the teres major and latissimus dorsi

34
Q

what are the connective tissue sheaths around skeletal muscle fibers, muscle fascicles, and whole muscles, respectively ?

A

Endomysium, perimysium, and epimysium

35
Q

Why are skeletal muscle fibers (skeletal muscle cells) multinucleate?

A

skeletal muscle fibers are formed by the fusion of embryonic myoblasts

36
Q

The thigh portion of the lower limb has how many compartments?

A

3

ANAT1005 sem 2 2020 (3 decks)

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