Muscular System

Question 0

What are the three types of muscles?

Answer 0

Smooth, skeletal, and cardiac

Question 1

Root word for muscle and its origin:

Answer 1

Mus; Latin

Question 2

Where is skeletal muscle generally located?

Answer 2

On a bone

Question 3

Are skeletal muscles voluntary or involuntary?

Answer 3

Voluntary

Question 4

What shape are skeletal muscles?

Answer 4

Striated; They appear to be striped

Question 5

Functions of skeletal muscles:

Answer 5

Produce movement
Maintain body posture
Stabilize joints
Produce heat/Maintain body temperature

Question 6

Can skeletal muscles easily regenerate?

Answer 6

No

Question 7

Where is smooth muscle generally found?

Answer 7

In the walls of viscera

E.g. : Stomach, Bronchial tubes

Question 8

Are smooth muscles voluntary or involuntary?

Answer 8

Involuntary

Question 9

What are three characteristics of smooth muscle contraction?

Answer 9

Smooth muscle contraction is slower and continues for a longer time period

Smooth muscle regenerates better than skeletal muscle

Greater degree of stretchiness

Question 10

How many places in the body can cardiac muscle be found in?

Answer 10

One

Question 11

Give a description of smooth muscles.

Answer 11

Non-striated and involuntary

Question 12

Give a description of cardiac muscles.

Answer 12

Striated

involuntary

Question 13

Describe cardiac muscle cells.

Answer 13

Long branching cells that fit together tightly at junctions called intercalated discs

Question 14

What is the belly of the muscle?

Answer 14

The enlarged fleshy body of the muscle between the slender point of attachment.

Question 15

Define fascia.

Answer 15

Layers of tough connective tissue surrounding a large skeletal muscle

Question 16

Define epimysium.

Answer 16

The outer layer of fascia

Question 17

Define perimysium.

Answer 17

Another layer of connective tissue that surrounds smaller bundles of muscle fibers

Question 18

Define fascicles.

Answer 18

The bundles of muscle fibers that are surrounded by perimysium.

Question 19

Define define endomysium.

Answer 19

A third layer of connective tissue that surrounds individual muscle fibers that are found within the fascicles.

Question 20

What forms a tendon and what does it look like?

Answer 20

Epimysium, perimysium, and endomysium. They attach the bone as a tendon (long cord-like structure)

Question 21

Origin

Answer 21

The part of the muscle attached to the more immovable structure

Question 22

Sarcoplasmic reticulum

Answer 22

Calcium storing endoplasmic reticulum located in muscle

Question 23

Smooth muscle

Answer 23

Non-striated involuntary muscle found in tubes and organs

Question 24

Aponeurosis

Answer 24

Broad flat sheet of fibrous connective tissue that connects muscles to another structure

Question 25

Actin

Answer 25

One of the contractile proteins in muscle also called thin filaments

Question 26

Sarcomere

Answer 26

Contractile unit of muscle extending from z lines to z line

Question 27

Insertion

Answer 27

The more movable attachment point of a muscle to a bone

Question 28

Synergist

Answer 28

A muscle that assists or works when another muscle

Question 29

Myosin

Answer 29

Muscle proteins that interacts with actin to call muscle contraction Also called thick filament

Question 30

Tendon

Answer 30

Cord like structure that attaches muscle to a bone