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 54 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

dreamfighter72

  • Member
  • Posts: 355
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Animal cells and the extracellular matrix (ECM) Animal cells and the extracellular matrix (ECM)
Transduction in Hair Cells of the Inner Ear Transduction in Hair Cells of the Inner Ear
Immune Reactions Immune Reactions
Fluorescence-activated cell sorter (FACS) separates cells that are labeled diffe Fluorescence-activated cell sorter (FACS) separates cells that are labeled diffe
Major components and functions of the nervous system. Major components and functions of the nervous system.
A gasoline direct-injection system injects fuel under high pressure directly into the combustion ... A gasoline direct-injection system injects fuel under high pressure directly into the combustion ...
Video: Oogenesis Animation

For a complete list of videos, visit our video library