Muscle Anatomy - Neck & Shoulder Muscles

Question 1

Where does the long head tricep originate?

Answer 1

Caudal border of scapula

Question 2

Where does the long head tricep insert?

Answer 2

Oleceanon process (elbow)

Question 3

What is the action of the long head tricep?

Answer 3

Flexes shoulder and extends elbow

Question 4

What are the three heads that make up the tricep muscles?

Answer 4

Long head
Lateral head
Medial head

Question 5

Where does the lateral head tricep originate?

Answer 5

Head of humerus on lateral side

Question 6

Where does the lateral head insert?

Answer 6

Olecranon process of elbow lateral side

Question 7

What is the action of the lateral head?

Answer 7

Extend the elbow joint

Question 8

Where does the medial head originate?

Answer 8

Middle third of humerus on medial side

Question 9

Where does the medial head insert?

Answer 9

Olecranon process of elbow

Question 10

Where does the sternomandibular muscle originate?

Answer 10

Mamubrium at sternum

Question 11

Where does the sternomandibular muscle insert?

Answer 11

Back edge of mandible

Question 12

What are some actions of the sternomandibular muscle?

Answer 12

Flex neck and being head down to chest

Question 13

Where does the splenius cervicis originate?

Answer 13

Spinous process of T3-T5 along nuchal ligament to poll

Question 14

Where does the splenius cervicis insert?

Answer 14

Transverse process of C3-C5

Question 15

What is the action of the splenius cervicis?

Answer 15

Lifting head

Question 16

Where does the sternohyoid muscle originate?

Answer 16

Manubrium on sternum

Question 17

Where does the sternohyoid muscle insert?

Answer 17

Hyoid bone

Question 18

What is the action of the sternohyoid muscle?

Answer 18

Retracts and depresses hyoid bone & tongue

Question 19

Where does the Omohyoid muscle originate?

Answer 19

Subscapular fascia at shoulder joint

Question 20

Where does the Omphyoid muscle insert?

Answer 20

Hyoid bone

Question 21

What is the action of the Omohyoid muscle?

Answer 21

Assist sternohyoid to retract tongue and helps swallow

Question 22

Where does the Omotransversarius muscle originate from?

Answer 22

Transverse processes of C2-C4 and to the wing of the atlas

Question 23

Where does the Omotransversarius muscle insert?

Answer 23

Brachiocephalic muscle on the humerus
Is also attached to shoulder fascia

Question 24

What are some actions or the Omotransversarius?

Answer 24

Together with the Brachiocephalic will bend the neck laterally

Question 25

What are the two portions of the scalenes muscle?

Answer 25

Medial and ventral

Question 26

Where does the scalenes originate?

Answer 26

Cranial and lateral aspect of 1st rib

Question 27

Where does the medial and ventral Scalenes muscle insert?

Answer 27

Medial: transverse process of C7
Ventral: transverse process of C4-C6

Question 28

What is the action of the Scalenes?

Answer 28

Stabilize base of the neck

Question 29

Where does the Subscapularis muscle originate?

Answer 29

Underside of scapula

Question 30

Where does the subscapularis insert?

Answer 30

Humerus on lesser tubercle

Question 31

What is the action of the subscapularis?

Answer 31

Adduct the humerus
Rotate from limb inward

Question 32

Where does the Supraspinatus originate?

Answer 32

Top of scapula & supraspinatus fossa

Question 33

What is muscle is the Supraspinatus counter part to?

Answer 33

Infraspinatus

Question 34

Where does the Supraspinatus muscle insert?

Answer 34

Both sides of the head or the humerus

Question 35

What is the action of the Supraspinatus?

Answer 35

Extend the shoulder and provide lateral support for shoulder joint

Question 36

Nerve damage in what muscle is called Sweeney?

Answer 36

Supraspinatus

Question 37

Where does the Teres Major muscle originate?

Answer 37

Caudal border of scapula

Question 38

Where does the Tres Major muscle insert?

Answer 38

Back of humerus at teres tuberosity

Question 39

What is the action of the Tres Major?

Answer 39

Rotate and adduct humerus
Flex the shoulder joint

Question 40

Where does the Teres Minor originate?

Answer 40

Caudal border of scapula

Question 41

Where does the Teres Minor insert?

Answer 41

Lateral and caudal portion of the humerus

Question 42

What is the action of the Teres Minor?

Answer 42

Assists in abducting & laterally rotating the arm and flexing the shoulder

Question 43

What is the action of the Teres Minor?

Answer 43

Assists in abducting & laterally rotating the arm and flexing the shoulder