Muscular System

Question 1

Four cell types contribute movement
incudes:

Answer 1

1. Amoeboid cells
2. Flagellated cells
3. Ciliate cells
4. Muscle cells

Question 2

are arranged usually in bundles or sheets.

Answer 2

Muscle cells or muscle fibers

Question 3

Major function of muscular system

Answer 3

1. Body movement and Maintenance of posture
2. Respiration
3. Production of body heat
4. Communication
5. Constriction of organs and vessels
6. Heart beat

Question 4

is the attachment site
that do not move during the
contraction

Answer 4

Origin

Question 5

is the attachment
site that moves during contraction

Answer 5

Insertion

Question 6

the bodily movement
cause by the contraction of
muscles.

Answer 6

Action

Question 7

bends one part or another

Answer 7

Flexor

Question 8

straight or extends apart

Answer 8

Extensor

Question 9

draws a part away from the axis of the body

Answer 9

Abductor

Question 10

lowers a part

Answer 10

Depressor

Question 11

raises or elevates a part

Answer 11

Levator

Question 12

rotates a part

Answer 12

Rotator

Question 13

turn the ventral side down

Answer 13

Pronator

Question 14

turn the ventral side up

Answer 14

Supinator

Question 15

The ability of muscle cells to forcefully shorten.

Answer 15

Contractility

Question 16

The ability to respond to a stimulus, which may be delivered from a motor neuron or a hormone

Answer 16

Excitability

Question 17

The ability of a muscle to be stretched

Answer 17

Extensibility

Question 18

3 properties of a muscle tissue

Answer 18

Contractility, Excitability, Extensibility

Question 19

this is under the control of the will and forms the large proportion of the body musculature

Answer 19

Striated/Voluntary

Question 20

the movement is not under the control of the will but under the control of the sympathetic nervous system; found in the walls of the digestive tract and other organs of the viscera; striations do not appear in this kind of muscle fiber.

Answer 20

Smooth/Nonstriated/Involuntary

Question 21

found only in the heart. It is striated yet
involuntary

Answer 21

Cardiac

Question 22

What do muscle fibers, or cells, consist of

Answer 22

bundles of myofibrils

Question 23

Myofibrils contain bundles of
overlapping thick

Answer 23

myosin

Question 24

overlapping thin protein filaments

Answer 24

actin

Question 25

are the contractile units (fundamental
unit of muscle action)

Answer 25

Sacromeres