Muscles

Question 1

Naming skeletal muscles

Answer 1

shape, location, size, direction of fibers, number of origins, location of attachments, muscle action, combination

Question 2

All skeletal muscle consists of what?

Answer 2

Fascicles

Question 3

What are the muscle arrangements?

Answer 3

Parallel, Circular, Convergent, Pennate (feathered), Fusiform

Question 4

What are the types of Pennate arrangements?

Answer 4

Unipennate, Bipennate, Multipennate

Question 5

What does circular arrangement refer to?

Answer 5

fascicles arranged in concentric rings (orbicularis oris)

Question 6

What does a convergent arrangement refer to?

Answer 6

broad origin, fascicles converge towards single tendon insertion (pectoralis major)

Question 7

What does a parallel arrangement refer to?

Answer 7

fascicles parallel to long axis of strap like muscle (sartorius)

Question 8

What does a fusiform arrangement refer to?

Answer 8

spindle-shaped muscles with parallel fibers (biceps brachii)

Question 9

What does a pennate arrangement refer to?

Answer 9

short fascicles attach obliquely to central tendon running length of muscle (rectus femoris)

Question 10

What does unipennate refer to?

Answer 10

fascicles attach only to one side of tendon (extensor digitorum longus (shin muscle))

Question 11

What does bipennate refer to?

Answer 11

fascicles insert from opposite sides of tendon ( rectus femoris)

Question 12

What does multipennate refer to?

Answer 12

appears as feathers inserting into one tendon (deltoid)

Question 13

What do the fascicles determine?

Answer 13

muscle power and ROM

Question 14

What is an origin?

Answer 14

Stationary attachment site during muscle contraction

Question 15

Whats an insertion?

Answer 15

Mobile attachment site during muscle contraction

Question 16

Where do facial expression muscles insert?

Answer 16

Skin

Question 17

Facial expression muscles are generally innervated by which nerve?

Answer 17

CN VII

Question 18

What are the two groups of facial expression muscles?

Answer 18

Scalp and Face

Question 19

What are the muscles of mastication?

Answer 19

Temporalis, Masseter, Pterygoids, and Buccinator

Question 20

Temporalis and Masseter muscles are responsible for what?

Answer 20

prime movers of jaw closure

Question 21

True or False: The muscles responsible for grinding movements are the pterygoids

Answer 21

True

Question 22

Which muscle has the chewing role?

Answer 22

Buccinator

Question 23

Which 3 muscles are responsible for anchoring and moving the tongue?

Answer 23

Genioglossus, Styoglossus, Hyoglossus

Question 24

Which muscle divides the neck into 2 triangles, anterior and posterior?

Answer 24

Sternocleidomastoid

Question 25

Explain swallowing

Answer 25

Tongue and Buccinator muscles push food back towards the pharynx, where muscles in the posterior mouth and pharynx complete the swallowing process. Epiglottis closes over the larynx while muscles in the walls of the pharynx propel food toward the stomach

Question 26

What two types of muscles are involved in the swallowing process?

Answer 26

Suprahyoid and Infrahyoid

Question 27

What muscles make up the suprahyoid muscles?

Answer 27

geniohyoid, mylohyoid, stylohyoid, hyoglossus

Question 28

What “strap-like” muscles make up the infrahyoid muscles?

Answer 28

thyrohyoid, sternohyoid, omohyoid, sternothyroid

Question 29

What are the functions of the suprahyoid muscles?

Answer 29

Anchor tongue
Form floor of oral cavity
Elevate hyoid bone
Move larynx

Question 30

What are the functions of the infrahyoid muscles?