MUSCULAR SYSTEM

Question 1

is composed of individual muscle fibers that act

together, resulting in a uniform movement

Answer 1

Muscle

Question 2

properties of muscle
- after responding to nerve impulse
stimulation

Answer 2

irritability or electrical excitability

Question 3

properties of muscle
- after responding to stimuli, by shortening or
contracting lengthwise

Answer 3

contractibility

Question 4

properties of muscle
- by stretching, usually up to 30% of the
resting length

Answer 4

extensibility

Question 5

properties of muscle
- where muscles tend to recoil or return to its
original/resting length after being stretched

Answer 5

elasticity

Question 6

muscle functions
- where muscle fibers maintain a state of contraction known
as tonus

Answer 6

movement

Question 7

muscle functions

- as one of the principles of homeostasis

Answer 7

body heat production

Question 8

muscle functions
- by maintaining posture, joint stability and
viscera support.

Answer 8

posture and support of body

Question 9

are attached to the skeleton and are responsible for

voluntary body movements

Answer 9

skeletal muscles

Question 10

muscle fibers of skeletal muscles are _____ and _____

Answer 10

multi-nucleated -

transversely striated

Question 11

part of skeletal muscle fibers that are grouped in parallel bundles

Answer 11

fasciculi

Question 12

• make-up the blood vessels and tubular organs of the
  gastrointestinal tract, reproductive, urinary, and respiratory systems
• under autonomic control (which makes them involuntary)

Answer 12

smooth muscles

Question 13

muscle fibers of smooth muscles are ____ and _____

Answer 13

unstriated - contain a single nucleus

Question 14

are found only in the wall of the heart

Answer 14

cardiac muscles

Question 15

cardiac muscles have ____ and have unique property of _____

Answer 15

striations - auto-rhythmicity

Question 16

the contractions of cardiac muscles are ____

Answer 16

involuntary having an intrinsic rhythm

Question 17

cardiac muscles has _____ that help adjacent cells together and transmit the force of
contraction from cell to cell.

Answer 17

intercalated discs

Question 18

muscles are attached to bone by dense connective

tissues

Answer 18

tendons

Question 19

the less movable attachment of muscles

Answer 19

origin

Question 20

the more movable bony attachment of muscles

Answer 20

insertion

Question 21

thick part of muscle

Answer 21

belly or gaster

Question 22

binds the

individual muscle fibers together and support capillaries and nerve endings

Answer 22

endomysium

Question 23

binds groups of muscle fibers together into bundles

Answer 23

perimysium

Question 24

covers the entire muscle

Answer 24

epimysium

Question 25

a fibrous connective tissue that covers the muscle and attaches to the skin

Answer 25

fascia

Question 26

are | muscles that decrease the angle of the joint

Answer 26

flexors

Question 27

are muscles that | increase the angle of the joint

Answer 27

extensors

Question 28

are muscles that pull a limb | toward the median plane

Answer 28

adductors

Question 29

are muscles that move the limb away | from the median plane

Answer 29

abductors

Question 30

are muscles, either striated or smooth, | that encircle an opening

Answer 30

sphincters

Question 31

are muscles that directly responsible | for producing the desired action

Answer 31

agonists

Question 32

are muscles that directly | opposite that of the agonists

Answer 32

antagonists

Question 33

are muscles that oppose any | undesired action of the agonists.

Answer 33

synergists