« previous next »

Author Question: When a presynaptic neuron is stimulated in a patient's body by an electrical current, ... (Read 39 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?

Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.

Did you know?

On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Teaching an illterate patient Teaching an illterate patient
The medical assistant often has to reassure and comfort the patient before effective communication c The medical assistant often has to reassure and comfort the patient before effective communication c
One Bread, One Body One Bread, One Body
Current FDA Pregnancy Category Ratings with Examples Current FDA Pregnancy Category Ratings with Examples
Anatomy of the heart. Remember: It is labeled right and left based on the patient’s perspective. Anatomy of the heart. Remember: It is labeled right and left based on the patient’s perspective.
Microbiology with Diseases by Body System, 3e (Bauman) Microbiology with Diseases by Body System, 3e (Bauman)
Video: Lipid digestion - mouth, stomach and small intestine

For a complete list of videos, visit our video library