Circulation Flashcards Preview

SAT II BIOLOGY > Circulation > Flashcards

Flashcards in Circulation Deck (24):
1

Artery

  • Carries blood AWAY from the heart under HIGH pressure
  • THICK elastic walls
  • Can contract and expand as needed
  • Carry oxygenated blood except for the pulmonary artery
  • Have a pulse
  • NO VALVES

2

Vein

  • Carries BACK to teh heart under LOW pressure
  • THIN walled
  • VALVES to prevent backflow
  • Located within skeletal muscle, which propels blood upsward and back to heart
  • NO pulse
  • Carry deoxygenated blood except for pulmonary vein

3

Capillary

  • Diffusion of nutrients and wastes between cells and blood
  • Thin-walled
  • So small that blood cells travel single file
  • Blood travels slowly

4

Plasma

  • Liquid portion of blood
  • Contains clotting factors, hormones, antibodies, dissolved gases, nutrients, wastes
  • 90%water

5

Thrombus

Clot

6

Serum

Plama without clotting factors

7

Calcium

Necessary for normal blood clotting

8

Damaged tissue and platelets release:

Thromoboplastin + Calcium

 Stimulates

Prothrombin(inactive) ----> Thrombin(Active)

Stimulates

Fibrinogen(Inactive)----> Fibrin/Clot (Active)

 

9

Erythrocytes

  • Red blood cells
  • Carry hemoglobin and oxygen
  • Don't have a nucleus
  • Live 120 days
  • Formed in bone marrow
  • Recycled in the liver

10

Leukocytes

  • White blood cells
  • Fight infection
  • FOrmed in the bone marrow
  • Die fighting infection
  • A component of pus

11

Thrombocytes

  • Platelets
  • Clot blood
  • Cell fragments that are formed in the bone barrow from megakaryocytes

12

Sinoatrial Node (SA)

  • Sets the timing of heart contractions
  • influenced by the nervous system, hormones, body temp

13

Electrocardiogram

Can detect electrical impulses that travel through teh cardia and body tissues to the skin

14

What is the average blood pressure for adults?

120/80

15

Systolic number 

Top number; measurement of the pressure when the ventricles contract

16

Diatolic Number

Bottom number; measure of the pressure when the heart relaxes

17

Atrium

receive blood

18

Ventricle

Pump blood out of heart

19

Lymph vessels

  • Carry extracellular fluid(lymph) at very low pressure, without cells

20

Lymph nodes

  • Filter lymph to rid it of foreign particles
  • Maintain the proper balance of fluids in the tissues of the body
  • Involved in the transport of chylomicrons as part of fat metabolism
  • Returns lymph to the blood system via the largest lymph vessel, the thoracic duct.

 

21

Coronary

22

Renal

Kidney

23

Hepatic

24