Practice exam for Biological

Practice exam for Biological psychology with answers

• The nucleus of the nerve cell is located within the
• soma.
• axon.
• axon terminals.
• dendrites.
• mitochondria.

The right answer is A.-The soma is the cell body of the nerve cell.-The axon sends signals to other neurons and terminates in the axon terminals.-The dendrites receive information from other cells.-The mitochondria is the power house of the cell. It makes ATP and is located in the cell soma.

• The _______ are the key supply source of energy for neurons.
• phagocytes
• Schwann cells
• dendrocytes
• astrocytes
• microtubules

The right answer is D.-Astrocytes make contact with blood vessels to take up glucose so they can give this to the nerve cells. The nerve cells use this glucose to make ATP.-Phagocytes engulf and break down dead and dying neurons. This is done by microglia cells.-Schwann cells are important for making the myelin sheath around axons in the peripheral nervous system.-A dendrocyte is a dendritic cell that originates in bone marrow.-Microtubules are the road system for transportation of neurotransmitter through the axon.

• Myelination of brain nerve axon membranes is accomplished by
• oligodendrocytes.
• microglia.
• astrocytes.
• neurocytes.
• Schwann cells.

The right answer is A.-Oligodendrocytes form the myelin sheath around axons in central nervous system.-Microglia are important for the immunologic defense in the brain and removal of dead cells.-Astrocytes are important for structure and solidity between neurons, and they also isolate the synaptic clefts, so the neurotransmitters are not distributed through the whole brain.-Neurocytes is another word for neurons, and they convey electrochemical impulses.

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