Introduction of Muscles Pt. 1

Question 1

Origin

Answer 1

attachment of a muscle to the more stationary bone

Question 2

Insertion

Answer 2

attachment of the bone to the more moveable bone

Question 3

Belly (gaster)

Answer 3

the fleshy portion of the muscle b/w the origin and the insertion

Question 4

Agonist

Answer 4

muscle that produces a desired action, prime mover

Question 5

Antagonist

Answer 5

muscle that opposes the desired motion, is relaxed

Question 6

Synergist

Answer 6

muscles that serve to steady the desired movement

Question 7

Fixator

Answer 7

stabilizes the origin of the agonist to allow the prime movement to occur

Question 8

Fascia is a,

Answer 8

dense sheet of irregular connective tissue that lines the body wall and limbs that supports the muscles and other organs of the body

Question 9

Superficial fascia is,

Answer 9

• made up of hypodermis + adipose tissue/areolar tissue
• lies immediately deep to the skin
• stores fat, insulation, mechanical protection, pathway for nerves and blood vessels

Question 10

Deep fascia is,

Answer 10

• made up of loose connective tissue + collagen
• allows free movement of muscles, nerves, blood vessels, and lymph vessels and fills spaces b/w muscles
• lines body wall and extremities and holds muscles together separating them into functional groups

Question 11

Fascia allow for

Answer 11

free movement of muscles; carries nerves, blood vessels, and lymphatic vessels and fills spaces b/w muscles

Question 12

Epimysium or “mysium”

Answer 12

outer layer of muscle, consists of dense irregular connective tissue

Question 13

Perimysium

Answer 13

outer layer of dense irregular connective tissue that surrounds groups of muscle fibers separating them into bundles of fascicles.

Question 14

Fascicles

Answer 14

are little bundles of muscle fibers

Question 15

Endomysium

Answer 15

penetrates the interior of each fascicle and separates each individual muscle fiber from one another (mostly reticular fibers)

Question 16

All 3 connective tissues together form,

Answer 16

a tendon

Question 17

Muscle compartments are,

Answer 17

group of functionally related muscles enclosed and separated from others by inter muscular septa

Question 18

Septa

Answer 18

wall of connective tissues b/w muscle groups

Question 19

Tendon

Answer 19

dense connective tissue, attaches muscles to periosteum of bone

Question 20

Tendon sheath

Answer 20

high risk areas like the wrists and ankles have these and are wrapped in a layer of synovial membrane, forming a tendon synovial sheath

Question 21

Aponeurosis

Answer 21

when the three connective tissues extend from the muscle as a flat sheet rather than a round cord