muscles and nerves

Question 1

what are the skeletal muscles of the thorax?

Answer 1

pectoralis minor
pectoralis major
serratus anterior
intercostals

Question 2

what are the skeletal muscles in the abdomen?

Answer 2

rectus abdominus
external oblique
internal oblique
transversus abdominus

Question 3

what are the superficial skeletal muscles of the back?

Answer 3

latissimus dorsae
trapezius
deltoid
levator scapulae
supraspinatus
infraspinatus
teres major
teres minor

Question 4

what are the deep muscles in the back?

Answer 4

erector spinae

Question 5

what two compartments are there in the upper limb?

Answer 5

anterior and posterior

Question 6

what separates the compartments in the upper limb?

Answer 6

intermuscular septum

Question 7

what action does the anterior compartment of the arm have on the arm?

Answer 7

flexion

Question 8

what action does the posterior compartment of the arm have on the arm?

Answer 8

extension

Question 9

how many heads do the biceps have?

Answer 9

2

Question 10

how many heads do the triceps have?

Answer 10

3

Question 11

what action other than flexion does the anterior compartment of the forearm have on the forearm?

Answer 11

pronation

Question 12

what action other than extension does the posterior compartment of the forearm have on the forearm

Answer 12

supination

Question 13

what is responsible for the nerve supply to the upper limb?

Answer 13

brachial plexus

Question 14

how many muscle compartments are there in the lower limbs?

Answer 14

3

Question 15

what are the actions of the 3 compartments of the lower limbs on the lower limbs above the knee?

Answer 15

posterior - flexors
anterior - extensors
medial - adductors

Question 16

what are the actions of the three compartments of the lower limb on the lower limbs below the knee?

Answer 16

anterior - dorsiflexion
posterior - plantarflexion and inversion of the foot
lateral - eversion of the foot

Question 17

what nerves supply which compartments of the lower limbs?

Answer 17

femoral nerve - anterior
sciatic nerve - posterior
obturator - medial

Question 18

what supplies the nerves of the lower limb?

Answer 18

lumbosacral plexus

Question 19

what are some histological features of skeletal muscle?

Answer 19

multinucleate (nuclei peripherally located)
striations
can sometimes see the NMJ

Question 20

what are some histological features of smooth muscle?

Answer 20

no striations
shorter fibre length than skeletal muscle
centrally situated “cigar shaped” nuclei

Question 21

what are some histological features of cardiac muscle?

Answer 21

mononucleate
region where ends of cells are connected to another cell are called intercalated discs
intercalated disc contains gap junctions

Question 22

what do dorsal rami supply?

Answer 22

erector spinae

Question 23

what do ventral rami supply?

Answer 23

everything except erector spinae

Question 24

what are the dermatomes of the:
sternomanubrial joint
skin over the nipples
skin over the umbilicus
skin over the groin region

Answer 24

T2
T4
T10
L1