When blood enters the vast network of capillaries, called a(n) ...

[newbem]

When blood enters the vast network of capillaries, called a(n) _____________, it is so dispersed that the rate of flow is reduced to a slow trickle, permitting time for O2 and nutrients to enter the tissue cells in exchange for CO2 and waste products.
 A) capillary bed
  B) vena cava
  C) arteriole branch
  D) infarction

Question 2

This device consists of a small battery-powered pulse generator with electrode catheters. The electrodes are inserted into a vein and threaded through the vena cava, one to the right atrium, the other into the right ventricle at the apex.
 A) artificial pacemaker
  B) stent
  C) angioplasty
  D) defibrillator

[Madisongo23]

Answer to Question 1

A

Answer to Question 2

A

[newbem]

Great answer, keep it coming

[dyrone]

Thanks for the timely response, appreciate it