Circulatory System Flashcards Preview

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Flashcards in Circulatory System Deck (27):
0

Unicellular organisms

No need for circulatory system , materials move into and out of the cell by diffusion and osmosis

1

Cyclosis

Streaming of cytoplasm

2

Cnidarians

Most cells are in contact with the external environment ...exchange of nutrient and wastes can take place directly

3

Annelida

Simple closed circuits of blood vessels with five small hearts which are really just pulsating vessels

4

Insects and other Arthropoda

Open circulatory system that bathes their internal organs ;consist of on dorsal vessel that pulsate, keeping the blood moving through out the body; blood does not carry oxygen

5

Arteries

Carrie blood away from heart, thick elastic muscular walls that dilate or contract to control blood pressure within vessels, arterial blood pressure tends to be high , usually rich in oxygen since it is being pumped out to the body to provide oxygen and bring nutrients to the cells(except for in pulmonary circulation ), exceptions are the pulmonary arteries

6

Capillaries

Smallest are one cell thick allowing nutrient waste products oxygen and carbon dioxide to diffuse between the blood and the surrounding tissues

7

Veins

Carry blood toward heart, blood pressure and forward momentum of the blood in veins is more than in arteries,blood is pushed along the contractions of the skeletal muscles when the organism moves around , usually carry deoxygenated blood except of pulmonary circulation , contain unidirectional valves

8

Fish

Has two chambered heart , one closed loop and blood is pumped from heart to the full capillaries where oxygen picks up from the surrounding water , inefficient because the blood loses a lot of momentum in the film capillaries. After leaving the gill capillaries it travels slowly and with a lower pressure affecting the delivery of oxygen to the blood tissue

9

Amphibians reptiles birds and mammal

Two circuits within the circulatory system , pulmonary and systemic circulation , after the blood is pumped from the heart to the lungs to be oxygenated it is returned to the heart before it is pumped out to the rest of the body

10

Pulmonary circulation

To and from lungs

11

Systemic circulation

To and from the rest of the body

12

Amphibians and reptiles hearts

Three chambers and is inefficient because oxygen poor and rich blood is still mixed

13

Birds and mammals hearts

Four chambers composed of cardiac muscle , two halves, one for oxygenated and deoxygenated blood , each half has a atrium and ventricle

14

Atrium

Blood returns to the heart(top)

15

Ventricle

Where blood is pumped out of the heart (bottom)

16

Valves

Separate atria and ventricle

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Septum blood

Separated oxygenated and deoxygenate blood

18

Aorta

Largest artery leaving the heart

19

Vena cava

Veins leading back into the heart

20

How much blood does your heart pump?

5 liters per min

21

What is pulmonary used for?

Lungs

22

Why is systemic used for?

Body

23

What is cardiac used for?

Heart or coronary

24

Why's is lymphatic used for?

Filters foreign substances like bacteria from transport fluid

25

Lymphnods

Contain white blood cells that destroy bacteria and viruses present in lymph

26

Organs in the lymphatic system

Spleen and tonsils