Muscles of Interest

Question 1

How many heads do the biceps brachii have?

Answer 1

2; the long head and the short head

Question 2

Where does the bicep brachii originate?

Answer 2

on the scapula

Question 3

Where does the bicep brachii insert?

Answer 3

on the radius

Question 4

What are the main functions of the biceps brachii?

Answer 4

flexion of the elbow and supination of the forearm

Question 5

How many heads do the triceps have?

Answer 5

3; long head, lateral head, and medial head

Question 6

Where is the origin of the triceps?

Answer 6

scapula, back of the humerus

Question 7

Where do the triceps insert?

Answer 7

ulna

Question 8

What is the main function of the triceps?

Answer 8

elbow extension

Question 9

Where does the Pectoralis Major originate?

Answer 9

clavicle, sternum, ribs

Question 10

Where does the pectoralis major insert?

Answer 10

humerus

Question 11

What are the main functions of the pectoralis major?

Answer 11

shoulder flexion, shoulder adduction, and shoulder internal rotation

Question 12

Where does the trapezius originate?

Answer 12

the occipital bone and spines of cervical/thoracic vertebrae

Question 13

Where does the trapezius insert?

Answer 13

clavicle, spine, and scapula

Question 14

What are the main functions of the trapezius?

Answer 14

assists with keeping good posture, pulls scapula medially (towards the spine), and shoulder elevation (shrugging)

Question 15

Where does the latissimus dorsi (lat) originate?

Answer 15

spines of thoracic and lumbar vertebrae, the iliac crest (hip bone), and the lower ribs

Question 16

Where does the lat insert?

Answer 16

the inter-tubercular groove of the humerus

Question 17

What are the main functions of the lat?

Answer 17

arm extension/adduction, and it pulls shoulders down and posteriorly

Question 18

What are the three sections of the deltoids?

Answer 18

the anterior deltoid (front delt), the lateral delt (side delt), and the posterior delt (rear delt)

Question 19

What is the origin of the deltoid?

Answer 19

the scapula and the clavicle

Question 20

What is the insertion of the deltoid?

Answer 20

the tuberosity of the humerus

Question 21

What are the main functions of the deltoid?

Answer 21

abduction at the shoulder, flexion at the shoulder, and extension at the shoulder

Question 22

What do the quads make up?

Answer 22

the front of the thigh

Question 23

What are the muscles that make up the quads called?

Answer 23

the rectus femoris, vastus medialis, vastus lateralis, and vastus intermedius

Question 24

What function do the quad muscles assist with?

Answer 24

extension at the knee

Question 25

What three muscles make up the hamstrings?

Answer 25

the biceps femoris (which has 3 heads), the semitendinosus, and the semimembranosus

Question 26

What do the three hamstring muscles assist with?

Answer 26

flexion at the knee

Question 27

What is the origin of the calves?

Answer 27

the femur

Question 28

What is the insertion of the calves?

Answer 28

the back of the heel

Question 29

What are the main functions of the calves?

Answer 29

plantarflexion of the foot, and it assists with flexion at the knee

Question 30

What are the two muscles that the calves are made up of?

Answer 30

the gastrocnemius and the soleus

Question 31

What is the rectus abdominis?

Answer 31

the abdominal muscles

Question 32

Where does the rectus abdominis originate?

Answer 32

lower ribs

Question 33

Where does the rectus abdominis insert?

Answer 33

pubic symphysis

Question 34

What are the main functions of the rectus abdominis?

Answer 34

trunk flexion, stabilization, and balance