Week 7 - Muscle tissue

Question 1

How much of the total body weight of an average adult is muscle tissue?

a) 20-30%
b) 30-40%
c) 40-50%
d) 50-60%
e) 60-70%
c) 40-50%

Answer 1

c) 40-50%

Question 2

Which of the following is NOT a major function of muscle tissue?

a) moving blood throughout the body
b) generating heat through contractions
c) stabilizing the movement of joints
d) promoting movement of body structures
e) Production of Vitamins.

Answer 2

e) Production of Vitamins.

Question 3

This is the property of muscle that gives it the ability to stretch without damage.

a) electrical excitability
b) contractility
c) extensibility
d) elasticity
e) thermogenesis

Answer 3

c) extensibility

Question 4

This is the outermost layer of connective tissue surrounding a skeletal muscle.

a) tendon
b) ligament
c) endomysium
d) epimysium
e) perimysium

Answer 4

d) epimysium

Question 5

What is fascia?

Answer 5

A sheet of fibrous connective tissue that supports and surrounds muscle.

Question 6

What are fascicles?

Answer 6

Bundles of muscle fibers that are surrounded by the perimysium (dense irregular connective tissue)

Question 7

What is the endomysium?

Answer 7

Areolar connective tissue found within facicles (bundles of muscle fibers) that seperates them from one another.

Question 8

What is a tendon?

Answer 8

A cord of dense connective tissue composed of parallel bundles of collagen fibers that attach a muscle to the periosteum of a bone.

Question 9

What is aponerosis?

Answer 9

Connective tissue elements of a tendon extend as a broad flat layer e.g. on top of the skull.

Question 10

What are the functions of muscle tissue?

Answer 10

1) To produce body movements
2) To stabilize body positions
3) To support joints and other body parts
4) To produce heat

Question 11

What are the name of the neurons that stimulate muscle to contract?

Answer 11

Somatic motor neurons

Question 12

What is fibrosis?

Answer 12

Replacement of muscle fibers by fibrous scar tissue

Question 13

What is an action potential?

Answer 13

An electrical signal that travels along the plasma membrane and then spreads throughout the muscle fiber

Question 14

Define Myoglobin

Answer 14

A red coloured protein found within the Sarcoplasm of a muscle. It releases oxygen when it is needed by the Mitochondria for ATP

Question 15

What is the functions of the Sarcoplasmic Reticulum?

Answer 15

To store calcium ions (ca2+)