Midterm Lab: Muscle and Nervous Tissues

Question 1

What are the two types of movement?

Answer 1

Voluntary and involuntary

Question 2

Which muscles move voluntarily?

Answer 2

Skeletal

Question 3

Which muscles move involuntarily?

Answer 3

Cardiac muscle, smooth muscle

Question 4

Where can skeletal muscle be found in the body?

Answer 4

Attached to bones

Question 5

What are items to identify in the skeletal muscle (teased and whole) slide?

Answer 5

Straight, cylindrical cells
Striations
Several small nuclei (cells are multinucleated)

Question 6

Where can cardiac muscle be found in the body?

Answer 6

Myocardium of heart

Question 7

What are items to identify in the cardiac muscle?

Answer 7

Short, branched cells
Striations
Large nucleus (cells are mononucleated)
Intercalated discs (which joins cells end-to-end)

Question 8

Where can smooth muscle be found in the body?

Answer 8

Organ walls:
Stomach
Intestines
Uterus
Urinary bladder

Question 9

What are items to identify in the smooth muscle slide?

Answer 9

Short, slender cells with no striations
Nucleus (cells are mononucleated)
Involuntary control

Question 10

What are the two types of cuts to examine muscle tissue?

Answer 10

Cross section and longitudinal section

Question 11

What are striations?

Answer 11

Faint lines running perpendicular to the muscle.

Question 12

What are intercalated discs?

Answer 12

Discs that attach muscle ends to end.

Question 13

What are the two types of nervous tissue?

Answer 13

Neurons and neuroglia

Question 14

Where can a neuron smear be located in the body?

Answer 14

Brain

Spinal Cord

Question 15

What are items to identify in the neuron smear?

Answer 15

Neurons (conduct nerve impulses)
Axons and dendrites (if given a direction)
Neuroglial cells (neuroglia; supportive cells)

Question 16

Where can nerves cells be found?

Answer 16

Nerves

Question 17

What are items to identify in the nerves?

Answer 17

Fascicles

Perineurium

Question 18

How can you tell the difference between and an axon and a dendrite?

Answer 18

Axons are thicker, transmitting impulses away from the body.

Dendrites are very thin and faint, transmitting impulses toward the cell body.

Question 19

What are the smaller dot like structures on the neuron smear?

Answer 19

Neuroglia

Question 20

What is the largest structure with a nucleus inside?

Answer 20

The Neuron cell body

Question 21

In a nerve cross section slide, what are the dark pinkish circular structures?

Answer 21

Fascicles

Question 22

In a nerve cross section slide, what are the light colored borders surrounding the fascicles?

Answer 22

The perineurium

Question 23

In a nerve cross section slide, what are the solid white circular structures?

Answer 23

Blood vessels

Question 24

In a nerve longitudinal section, what are the pinkish thick stripes?

Answer 24

Fascicles

Question 25

In a nerve longitudinal section, what are the outer edges of the fascicles?

Answer 25

Perineurium

Question 26

What are considered the supportive cells of the neuron?

Answer 26

Neuroglia

Question 27

What are the functions of neurons?

Answer 27

Conduct nerve impulses