Final Lab Review

Front

Type of neuron that carries messages from the brain/spinal cord to the body

Back

Efferent/Motor neurons carry messages from the brain and spinal cord to the muscles and glands.

Front

What is myelin and what type of cell produces it?

Back

Myelin is a fatty substance that insulates axons, produced by Schwann cells in the peripheral nervous system and oligodendrocytes in the central nervous system.

Front

What do the terms systolic and diastolic mean?

Back

Systolic is the pressure during heart contraction, and diastolic is the pressure during heart relaxation.

Front

What are red blood cells?

Back

Red blood cells, also known as erythrocytes, are cells that carry oxygen from the lungs to the body and carbon dioxide from the body back to the lungs.

Front

What is the name when blood pressure falls to its lowest pressure, between beats?

Back

Diastolic pressure is the lowest pressure in the arteries between heartbeats.

Front

What is the function of Schwann cells?

Back

Schwann cells produce myelin in the peripheral nervous system, which insulates axons and speeds up signal transmission.

Front

What is the role of oligodendrocytes?

Back

Oligodendrocytes are cells in the central nervous system that produce myelin, insulating axons and facilitating faster nerve signal conduction.

Front

Define systolic pressure.

Back

Systolic pressure is the pressure in the arteries during the contraction of the heart when blood is pumped out.

Front

Define diastolic pressure.

Back

Diastolic pressure is the pressure in the arteries when the heart is at rest between beats.

Front

What is the primary function of erythrocytes?

Back

The primary function of erythrocytes (red blood cells) is to transport oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs.