Nervous Tissue Slides

Question 1

Explain the cross-section of a nerve.

Answer 1

• nerve fibre
• nerve fibre axis
• myelin sheath
• 3 connective tissues: endoneurium, perineurium, epineurium.
• connective tissue

Question 2

What is the role of the connective tissue in the nerve fibre?

Answer 2

to connect nerves and protect them from impact (vibrations and pressure).

Question 3

Explain the multipolar neuron.

Answer 3

• neuron with multiple dendrites and one axon,
• nucleus
• chromatophillic substance
• dendrites
• axon
• GLIAL CELLS

Question 4

What is the primary purpose of the chromatophilic substance?

Answer 4

• give cells their color
• maintaining the shape and size of cells

Question 5

Explain the slide of the “nerve ending”.

Answer 5

PANCREASE
- lamellar corpuscle
- external bulb
- internal bulb
- parts of the pancreas
- connective tissue

Question 6

What is the function of the lamellar corpuscle?

Answer 6

• decrease the impact (vibration and pressure) passed on from the environment into the nerve-ending
• decrease pain: overstimulation of nerves

Question 7

Explain the myelinated nerve fibre.

Answer 7

DARKER NERVE
- nerve fibre
- node of ranvier
- shwaan cell
- myelin sheath
- segment of a nerve fiber
- neurilemma

Question 8

What is the nerve fibre surrounded by?

Answer 8

the neurilemma

Question 9

Explain the unmyelinated nerve fibre.

Answer 9

• nerve fibre
• shwaan cells (encircling more than one segment of fibre)
• nucleus
• neurilemma