Biology - Circulatory System Flashcards Preview

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Flashcards in Biology - Circulatory System Deck (18):
1

Function

1. Transport substances around the body 2. Transport nutrients absorbed from intestine to all body cells 3. Picks up oxygen from lungs to heart to body cells 4. Carries waste from body cells to heart to lungs out 5. Regulation of body temperature 6. Transport disease fighting white blood cells throughout body

2

Blood

Carries substances throughout body

3

Red Blood Cells

- contain protein called hemoglobin (red) which allows them to transport oxygen throughout body

- make up almost 1/2 blood volume

4

White Blood Cells

Made up mainly of macrophages + leukocytes. Fights off diseases and has nucleus. Makes up less than 1%

5

Platelets

Clots blood; makes up less than 1% blood volume

6

Plasma

Red liquid that carries blood cells along; makes up over 1/2 blood volume

7

Blood Vessels

Tubes carrying blood to or from the heart to the rest of the body

8

Artery

Any of the muscular-walled tubes forming part of the circulation system by which blood is conveyed from the heart to all parts of the body

9

Vein

Any of the thin tubes forming part of the blood circulation system of the body, carrying blood toward the heart (has valves to prevent backflow)

10

Capillaries

The smallest of the body’s blood vessels. They form tube-like structures that have the diameter of a strand of hair so that nutrients can get in

11

The Heart

Two sided, four chambered pump made up mostly of cardiac muscle tissue. It contracts and expands to push blood through the whole entire body.

12

Right Side Heart

Pumps deoxygenated blood to lungs to pick up O2 (low pressure side)

13

Left Side Heart

Pumps oxygenated blood to all body cells (high pressure side)

14

Cardiac Muscle Tissue

- Special type of tissue found only in the heart - Causes heart to contract - All parts contract at the same time

15

Nerve Tissue

Sends electrical signals from the brain to cause contractions of the heart

16

Connective Tissue

- Includes blood vessels and blood - Connects everything together

17

Q image thumb

1. Deoxygenated blood enters the right atrium above right ventricle through a squeezing mechanism and gravity 2. Right ventricle pushes blood via valve towards lungs by pulmonary arteries where blood is oxygenated 3. Oxygenated blood moves back towards heart via pulmonary vein which is deposited in left atrium 4. The blood moves through left ventricle where it is pumped out to rest of the body

18

Interaction with other systems?

- Digestive: nutrients pass from digestive tract into circulatory

- Respiratory: provides oxygen to blood and takes out carbon dioxide from blood