Muscular System - Anatomy

Question 1

Epimysium

Answer 1

thick, dense, collagenous connective tissue that surrounds an entire muscle

Question 2

Fascicle

Answer 2

a bundle of skeletal muscle fibers

Question 3

perimysium

Answer 3

sheath of connective tissue surrounding a fascicle

Question 4

Muscle fiber

Answer 4

a cylindrical, multi-nucleated cell composed of myofibrils that contract when stimulated

Question 5

Myofibril

Answer 5

bundles of protein filaments that contain the contractile elements of a muscle cell

Question 6

Endomysium

Answer 6

delicate connective tissue that surrounds each individual muscle fiber

Question 7

Sarcolemma

Answer 7

cell membrane of a muscle fiber

Question 8

How muscles are named

Answer 8

-size (larger or smaller)
-length (longer or shorter)
-location (near another body part)
-origin &/or insertion
-shape
-function
-number of origins (or parts)
-direction of muscle fibers

Question 9

terms for muscle size

Answer 9

-maximus
-medius
-minimus
-major
-minor
-vastus

Question 10

terms for muscle length

Answer 10

-brevis
-longus

Question 11

Origin & insertion

Answer 11

origin - pt of muscle attachment that does not move
insertion - pt of muscle attachment that moves the bone

Question 12

terms for muscle shape

Answer 12

deltoid - triangular
rhomboid - diamond shape
trapezius - trapizoidal
serratus - saw-toothed/serrated
teres - round or cylindrical shaped

Question 13

terms for muscle fiber direction

Answer 13

rectus - straight (parallel to midline of body)
transverse - perpendicular to midline of body
oblique - slanted or diagonal
orbicularis - ringlike