The function of hormones in the bloodstream is most similar to which of the following?
A)the function of sodium ions in the action potential
B)the function of myelin surrounding the axons
C)the function of glial cells in the brain
D)the function of neurotransmitters in the synapse

Question

Quizplus · Accepted Answer

Hormones in the bloodstream are similar to neurotransmitters in the synapse in that they both transmit signals between cells in the body. Hormones are released into the bloodstream by endocrine glands and travel throughout the body to target cells, where they bind to specific receptors and elicit a response. Similarly, neurotransmitters are released from neurons into the synapse and bind to receptors on the postsynaptic cell, initiating a response. The other choices do not accurately describe the function of hormones in the bloodstream. Sodium ions are involved in the action potential, which is the electrical signal that travels along neurons, while myelin surrounds axons to increase the speed of signal transmission. Glial cells in the brain provide support and insulation to neurons but do not transmit signals through the bloodstream.

The Function of Hormones in the Bloodstream Is Most Similar