Author Question: Which factor contributes to older adults' impaired ability to resist infection and overall lowered ... (Read 92 times)

melina_rosy · **on:** Jun 25, 2018

Which factor contributes to older adults' impaired ability to resist infection and overall lowered immunity?

1) Systemic vascular resistance decreases.
2) Venous elasticity decreases.
3) Lymph nodes become fibrotic and fatty.
4) Thymus shrinks.

Question 2

What is the function of lymph nodes?

1) To drain lymph back to right lymphatic duct and thoracic duct
2) To filter microorganisms and foreign substances from lymph
3) To collect fluid from interstitial space and surrounding tissue
4) To secrete thymocytes that help with T-cell differentiation