« previous next »

Author Question: Action potentials are produced by the A) opening of voltage-activated sodium channels. B) ... (Read 101 times)

ec501234

  • Hero Member
  • *****
  • Posts: 573
on: Jun 22, 2018
Action potentials are produced by the
 
  A) opening of voltage-activated sodium channels.
  B) closing of ligand-activated chloride channels.
  C) closing of ligand-activated potassium channels.
  D) opening of ligand-activated potassium channels.
  E) closing of voltage-activated calcium channels.

Question 2

The brief period of time immediately after the initiation of an action potential when it is absolutely impossible to initiate another one in the same neuron is called the
 
  A) threshold of excitation.
  B) threshold of inhibition.
  C) absolute refractory period.
  D) IPSP.
  E) relative refractory period.


miss_1456@hotmail.com

  • Sr. Member
  • ****
  • Posts: 289
Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: C


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Did you know?

Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

The discovery of aquaporins, water channels made of a transmembrane protein. The discovery of aquaporins, water channels made of a transmembrane protein.
Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio Mendel's breeding program that produced a 9 : 3 : 3 : 1 ratio
Ion channels in myocardial cells: (a) resting state before action potential (all channel gates ... Ion channels in myocardial cells: (a) resting state before action potential (all channel gates ...
Negative reading oxygen sensor voltage can be caused by several problems. Negative reading oxygen sensor voltage can be caused by several problems.
Graded Potentials Graded Potentials
Checkpoint Genes in Action Checkpoint Genes in Action
Video: Heart sounds

For a complete list of videos, visit our video library