« previous next »

Author Question: When a presynaptic neuron is stimulated in a patient's body by an electrical current, ... (Read 74 times)

justinmsk

  • Hero Member
  • *****
  • Posts: 524
on: Jun 25, 2018
When a presynaptic neuron is stimulated in a patient's body by an electrical current, neurotrans-mitters are released from the:
 
  a. synapse.
  b. synaptic bouton.
  c. synaptic cleft.
  d. receptor.

Question 2

A cell was isolated from the CNS. A researcher revealed that its main function was to clear cel-lular debris. What type of cell is the researcher studying?
 
  a. Astrocyte
  b. Ependymal cell
  c. Microglia
  d. Schwann cell


diana chang

  • Sr. Member
  • ****
  • Posts: 288
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: B
When an impulse originates in a presynaptic neuron, the impulse reaches the vesicles, where chemicals (neurotransmitters) are stored in the synaptic bouton. Neurons are not physically con-tinuous with one another. The region between adjacent neurons is called a synapse. The synaptic cleft is the space between the neurons. Neurotransmitters attach to the receptor.

Answer to Question 2

ANS: C
Microglia remove debris (phagocytosis) in the CNS. Astrocytes and ependymal cells are neu-roglial cells and do not have phagocytic properties. Schwann cells help form the myelin sheath in the peripheral nervous system (PNS).


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Three Tissue Systems Extend Throughout the Plant Body Three Tissue Systems Extend Throughout the Plant Body
Nurse-patient interaction; nonveral communication Nurse-patient interaction; nonveral communication
Patient teaching: female breast assessment Patient teaching: female breast assessment
The patient's signature on the informed consent form indicates that the patient understands the The patient's signature on the informed consent form indicates that the patient understands the
Reputable Websites for Patient Education Cont. Reputable Websites for Patient Education Cont.
Concentric double-pipe heat exchanger for counter-current flow Concentric double-pipe heat exchanger for counter-current flow
Video: Angiotensin II - kidneys, adrenal glands and dehydration

For a complete list of videos, visit our video library