nervous tissue and nerve nets

Question 1

neurons

Answer 1

possess excitable plasma membrane and are specialized for the reception of stimuli and for transmission of electrical impulses

Question 2

neuroglia

Answer 2

smaller cells that perform a wide range of support functions in the tissue, including regulating the chemistry of the extracellular fluid, insulating neurons, providing a physical framework for neurons, fighting infection, and controlling nutrient exchange between neurons and the blood surrounding fluids

Question 3

dendrites

Answer 3

where stimuli are received/detected by these short branching processes

Question 4

cell body

Answer 4

cellular projections extend from here

Question 5

axon

Answer 5

transmits electrical signal along its length

Question 6

axon terminal

Answer 6

release neurotransmitters and how signals are transmitted from one cell to the next

Question 7

what two organisms have no nerve tissue?

Answer 7

sponges and placozoans

Question 8

nerve net

Answer 8

neurons that are located sub-epidermally and are loosely arranged in a centralized, interwoven network called a nerve net

Question 9

ganglia

Answer 9

groupings of a neuron cell bodies

Question 10

what types of organisms have nerve nets?

Answer 10

ctenophores and cnidarians

Question 11

centophores

Answer 11

comb jellies

Question 12

cnidarians

Answer 12

jellyfish, coral, hydra