This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Changes in the immune system that accompany aging include all of the following except A) T cells ... (Read 48 times)

tatyanajohnson

  • Hero Member
  • *****
  • Posts: 569
on: Feb 28, 2019
Changes in the immune system that accompany aging include all of the following except
 A) T cells becoming less responsive to antigens.
  B) fewer cytotoxic T cells responding to infections.
  C) decreased numbers of T helper cells.
  D) more efficient secondary responses.
  E) B cells are less responsive.

Question 2

Each of the following effects is associated with the action of postganglionic sympathetic fibers except
 A) increased sweat secretion.
  B) reduced circulation to the skin.
  C) decreased heart rate.
  D) dilation of the pupils.
  E) increased blood flow to skeletal muscles.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

cdmart10

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Feb 28, 2019
Answer to Question 1

D

Answer to Question 2

C


tatyanajohnson

  • Member
  • Posts: 569
Reply 2 on: Feb 28, 2019
:D TYSM

anyusername12131

  • Member
  • Posts: 327
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Did you know?

Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Nurse bees tending to brood in cells both open and capped with beeswax. Nurse bees tending to brood in cells both open and capped with beeswax.
Stages of endometrial cancer. Stage I: Mutated cells arise from glandular epithelium of the endometr Stages of endometrial cancer. Stage I: Mutated cells arise from glandular epithelium of the endometr
The male reproductive system. The male reproductive system.
The bicarbonate buffer system The bicarbonate buffer system
A typical evaporative emission control system. Note that when the computer turns on the canister ... A typical evaporative emission control system. Note that when the computer turns on the canister ...
Apothecary System Apothecary System
Video: Retina

For a complete list of videos, visit our video library