Circulation

Question 1

Artery

Answer 1

• 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

Question 2

Vein

Answer 2

• 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

Question 3

Capillary

Answer 3

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

Question 4

Plasma

Answer 4

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

Question 5

Thrombus

Answer 5

Clot

Question 6

Serum

Answer 6

Plama without clotting factors

Question 7

Calcium

Answer 7

Necessary for normal blood clotting

Question 8

Damaged tissue and platelets release:

Answer 8

Thromoboplastin + Calcium

Stimulates

Prothrombin(inactive) —-> Thrombin(Active)

Stimulates

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

Question 9

Erythrocytes

Answer 9

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

Question 10

Leukocytes

Answer 10

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

Question 11

Thrombocytes

Answer 11

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

Question 12

Sinoatrial Node (SA)

Answer 12

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

Question 13

Electrocardiogram

Answer 13

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

Question 14

What is the average blood pressure for adults?

Answer 14

120/80

Question 15

Systolic number

Answer 15

Top number; measurement of the pressure when the ventricles contract

Question 16

Diatolic Number

Answer 16

Bottom number; measure of the pressure when the heart relaxes

Question 17

Atrium

Answer 17

receive blood

Question 18

Ventricle

Answer 18

Pump blood out of heart

Question 19

Lymph vessels

Answer 19

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

Question 20

Lymph nodes

Answer 20

• 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.

Question 21

Coronary

Question 22

Renal

Answer 22

Kidney

Question 23

Hepatic