Chapter 8

Question 1

Fascia

Answer 1

layer of fibrous connective tissue
-surrounds and holds skeletal muscle in place

Question 2

Aponeuroses

Answer 2

broad fibrous sheets formed from connective tissue
-absorbs energy as muscles move

Question 3

Perimysium

Answer 3

separates muscles tissue into small compartments

Question 4

Skeletal muscle fibers

Answer 4

-single cell that contracts in response to stimulation and relaxes when stimulation end

Question 5

myofibrils

Answer 5

long, thread-like structures inside muscle fibers responsible for muscle contractions

Question 6

myosin

Answer 6

motor proteins that convert chemical energy into mechanical energy

Question 7

actin

Answer 7

major component in thin filaments

Question 8

Transverse Tubules

Answer 8

crucial for muscle contraction and facilatate electrical impulses and calcium release

Question 9

neuromuscular junction

Answer 9

connection between motor neruon and muscle fiber

Question 10

mother end plate

Answer 10

chemical synapse that enables motor neurons to signal muscle fibers to connect

Question 11

nuerotransmitter

Answer 11

tiny vesicles that store chemicals

Question 12

motor unit

Answer 12

motor neuron and muscle fiber it controls

Question 13

muscle impulse

Answer 13

when an impulse passes in all directions over surface of muscle fibers

Question 14

hemoglobin

Answer 14

protein that carries oxygen to lungs; causes blood cells red pigment

Question 15

myoglobin

Answer 15

protein in muscle tissue that stores oxygen

Question 16

oxygen debt

Answer 16

body’s demand for oxygen exceeds supply during excertion

Question 17

multiunit smooth muscles

Answer 17

fibers separated rather than one sheet

Question 18

visceral smooth muscles

Answer 18

sheets of spindle-shaped cells in close contact with one another

Question 19

origin

Answer 19

immovable part on a joint

Question 20

insertion

Answer 20

moveable part on a joint

Question 21

primer mover

Answer 21

muscle that provides the most movement