Question

nervous tissue—structure and function

1. this exercise emphasizes the difference between neurons and neuroglia.

indicate which cell type is identified by the following descriptions. insert
the appropriate letter or term in the answer blanks.
key choices
a. neurons b. neuroglia
____________________ 1. support, insulate, and protect cells
____________________ 2. demonstrate irritability and conductivity, and thus transmit
electrical messages from one area of the body to another area
____________________ 3. release neurotransmitters
____________________ 4. are amitotic
____________________ 5. able to divide; therefore are responsible for most brain neoplasms

Explanation:

1.

Neuroglia (B) have the function of supporting, insulating, and protecting neurons. Neurons are for signal transmission, so this description matches neuroglia.

Neurons (A) are excitable cells that can demonstrate irritability (response to stimuli) and conductivity (transmit electrical signals), allowing them to send electrical messages across the body.

Neurons (A) release neurotransmitters to communicate with other cells (like other neurons or muscle cells) across synapses.

Answer:

B. Neuroglia

2.