Muscle Tissue

Question 1

4 Gen Properties of Muscle Tissue.

Answer 1

1. Contractility
2. Excitability
3. Extensibility
4. Elasticity

Question 2

The ability to be stretched or extended

Answer 2

Extensibility

Question 3

ability to shorten forcibly

Answer 3

Contractility

Question 4

The ability to recoil and resume the original resting length

Answer 4

Elasticity

Question 5

ability to receive and respond to stimuli

Answer 5

Excitability

Question 6

Three types of muscle tissue are…

Answer 6

skeletal, smooth, and
cardiac

Question 7

Responsible for most body movements, maintain posture, stabilize joints, and generate heat.

Answer 7

Skeletal muscles

Question 8

Found in the walls of hollow organs and tubes, and move substances through them, help
maintain blood pressure, squeeze or propel substances
(i.e., food, feces) through organs.

Answer 8

Smooth Muscles

Question 9

Found in the heart and pumps blood throughout the body

Answer 9

Cardiac muscle

Question 10

Briefly Explain the Anatomy of Muscles

Answer 10

yay!

Question 11

General term for connective tissue sheets

Answer 11

Muscular fascia

Question 12

Three (3) muscular fascia, which separate and compartmentalize individual muscles or groups of muscles

Answer 12

1. Epimysium
2. Perimysium
3. Endomysium

Question 13

fine sheath of connective tissue composed of reticular fibers surrounding each muscle fiber

Answer 13

Endomysium

Question 14

Muscle cell plasma membrane

Answer 14

Sarcolemma

Question 15

Cytoplasm of a muscle cell

Answer 15

Sarcoplasm

Question 16

Prefixes used to refer to muscle

Answer 16

Myo, mys, and sarco

Question 17

Muscle contraction depends on two kinds of myofilaments:

Answer 17

actin and myosin

Question 18

densely packed, rod-like contractile elements.

Answer 18

Myofibrils

Question 19

Contains the active sites to which myosin heads attach during contraction

Answer 19

G actin

Question 20

Regulatory subunits bound
to actin.

Answer 20

Tropomyosin and troponin

Question 21

(thin) myofilaments

Answer 21

Actin

Question 22

(thick) myofilaments

Answer 22

Myosin

Question 23

The smallest contractile unit of a muscle.

Answer 23

Sacromeres

Question 24

Sarcomeres are bound by_____

Answer 24

Z disks

Question 25

When (a) a sarcomere (b)contracts, the Z lines move closer together and the____ gets smaller.

Answer 25

I band

Question 26

Band that stays the same width and, at full contraction, the thin filaments overlap

Answer 26

A band

Question 27

Extend the entire length of an A band

Answer 27

Thick filaments (myosin)

Question 28

Extend across the I band and partway into the A band.

Answer 28

Thin filaments (Actin)

Question 29

A coin-shaped sheet of proteins (connectins) that anchors the thin filaments and connects myofibrils to one another

Answer 29

Z-disc

Question 30

M lines appear darker due to the presence of the

Answer 30

Protein Desmin