Major muscle groups

Question 1

What is the axial muscle group?

Answer 1

muscles of trunk and head

Question 2

What is the appendicular muscle group?

Answer 2

arms and legs - stabilise and control the movement of the pectoral and pelvic girdles

Question 3

What are the two compartments of the appendicular muscle group?

Answer 3

flexor and extensor

Question 4

What is intermuscular SEPTA?

Answer 4

composed of anterior flexor and posterior extensors

Question 5

Describe nerves to muscle compartments?

Answer 5

muscles in same compartment usually supplied by same nerve
e.g. radial nerve supplies all extensor muscles in upper limb

Question 6

Describe the arm muscle compartments

Answer 6

includes flexors (anterior)

includes extensors (posterior)

Question 7

What nerves supply flexors and extensors?

Answer 7

flexor - musculocutaneous
extensors- radial n

Question 8

What is the whole upper limb supplied by?

Answer 8

network of nerves called brachial plexus

Question 9

What are the three major flexors in the anterior compartment?

Answer 9

biceps brachii
brachialis
coracobrachialis

Question 10

What is the major flexor in posterior compartment?

Answer 10

triceps brachii- acts on elbow and extend elbow

Question 11

How do muscle groups work in pair?

Answer 11

agonist- prime mover/contracts
antagonist -relaxes
fixator - stabilizer
synergist- augment action of agonist

Question 12

Forearm muscle compartments?

Answer 12

flexors and pronators
extensors and supinators
brachioradialis

Question 13

What nerves supply the flexor?

Answer 13

the medial and ulnar n

Question 14

What is function of flexors in forearm?

Answer 14

to flex the wrist

Question 15

What is function of extensors in forearm?

Answer 15

extend the wrist

Question 16

Function of brachioradialis?

Answer 16

posterior
flexes the elbow

Question 17

What nerve supplies the extensor group?

Answer 17

radial nerve

Question 18

What are the three major muscles in glutaeal region?

Answer 18

gluteus maximus
gluteus medius
gluteus minimus

Question 19

What is role of gluteus max?

Answer 19

extends hip joint and lateral rotation

Question 20

What is role of gluteus medius and minimus?

Answer 20

abduction of the hip joint and medial rotation

Question 21

What nerve supplies gluteal muscles?

Answer 21

sciatic nerve

Question 22

What are the three compartments of the thigh?

Answer 22

anterior, posterior and medial

Question 23

What are the muscle groups in thigh?

Answer 23

hamstrings
quadriceps
adductors

Question 24

Which nerves supplies hamstrings?

Answer 24

sciatic

Question 25

Which nerve supplies quadriceps?

Answer 25

femoral

Question 26

Which nerve supplies adductors?

Answer 26

obturator

Question 27

Function of hamstrings?

Answer 27

helps to flex the knee

Question 28

Function of quadriceps?

Answer 28

helps to extend the knee

Question 29

Where are hamstrings, quadriceps and adducted found on human body?

Answer 29

hamstrings-back of upper leg quadriceps- front of upper leg adductors- inner thigh

Question 29

Function of adductor?

Answer 29

adducts the hip

Question 30

Why are flexors at the back compartment?

Answer 30

During week 6 to week 8 of embryonic development , limb rotation happens and lower limb rotates medially and upper limb rotating laterally

Question 31

What are the three compartments in leg muscles?

Answer 31

anterior , posterior and lateral

Question 32

What muscle is in anterior compartment of leg muscles? and their function?

Answer 32

dorsiflexors - flex the ankle

Question 33

What muscle is in posterior compartment of leg muscles? and their function?

Answer 33

plantarflexors- plantar flex the ankle

Question 34

What muscle is in lateral compartment of leg muscles? and their function?

Answer 34

evertors eversion is away from midline

Question 35

What are the intrinsic muscles in the hand ?

Answer 35

hyperthenar- controls movement of little finger thenar - movement of thumb

Question 36

What are names of muscles in between fingers ?

Answer 36

interossei and lumbricals - help with precision movement

Question 37

What muscles help with fist / punching movements?

Answer 37

long tendons of the forearm