Circulation

Question 1

Functions of Blood

Answer 1

Deliver oxygen, and nutrients to all body cells

transport waste products from cells for elimination

transport hormones

maintain body temp

maintain pH

Maintain fluid volume

Prevent blood loss

Prevent infection

Question 2

Blood is % _ %

Answer 2

55% plasma and 45% cells

Question 3

which vessels have thick layer of smooth muscle cells

Answer 3

arteries

Question 4

which vessels have a valve to prevent back flow

Answer 4

veins

Question 5

Where is the greatest pressure drop in systemic circulation?

Answer 5

arterioles

Question 6

Natural pacemaker

Answer 6

SA node, responsible for initiating these action potentials

The heart’s electrical activity controls its mechanical contractions. The sinoatrial (SA) node initiates the electrical impulse, which travels through the atria, stimulating them to contract. The impulse then reaches the atrioventricular (AV) node and travels down the bundle of His and Purkinje fibers, causing the ventricles to contract.

Question 7

Do arteries or veins have a higher compliance

Answer 7

veins

Question 8

what type of flow occurs in veins

Answer 8

laminar

Question 9

what is a pulse

Answer 9

expansion and recoil of an artery with each beat of left ventricle

Question 10

systolic pressure

Answer 10

peak of ventricular contraction

Question 11

diastolic pressure

Answer 11

ventricules are relaxed

Question 12

Normal

Answer 12

120/70

Question 13

Graft

Answer 13

prosthetic tube that acts either a permanent or resorbable artificial replacement for a segment
of a damaged blood vessel

Question 14

Stent

Answer 14

a tubular support placed temporarily inside a blood vessel, canal, or duct to aid healing or relieve an obstruction.

Question 15

Types of cardiovascular heart diseases

Answer 15

coronary artery disease, peripheral artery disease, stroke

Question 16

Autograft

Answer 16

graft transplated from part of apatients body to another

Question 17

Allograft

Answer 17

Graft tissue derived from the sam epsecies

Question 18

Xenograft

Answer 18

vesicular tissue derived from anoyjer animal

Question 19

Homeostasis

Answer 19

Blood clotting to prevent bleeding upon vascular injury

Question 20

Thromobosis

Answer 20

pathological blood clotting.a blood clot within blood vessels that limits the flow of blood.

Question 21

What contributes to graft
failure?

Answer 21

-Fluid shear stress at end-to-side anastomosis (a cross-connection between adjacent vessels)
- Poor vascular healing
- Thrombosis-increased bleeding risk

Question 22

Steps of angioplasty (stent)

Answer 22

1) uninflated balloon catheter
2) dilated baloon catheter
3) dilated baloon catheter and stent
4) stent deployed

Question 23

Hyperplasia

Answer 23

an enlargement of an organ or tissue caused by an increase in the amount of organic tissue that results from cell proliferation.