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Biology 12 > Circulatory System > Flashcards

Circulatory System Flashcards

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1
Q

One of layers found in arteries, constrict and dilate to modify blood pressure

A

Smooth muscle

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2
Q

Larger blood vessels , carry blood back to heart

A

Veins

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3
Q

Main part of the heart , composed of mainly muscle

A

Myocardium

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4
Q

The chamber of the heart which receives blood from the rest of the body

A

Right atrium

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5
Q

Smaller vessels that carry blood away from heart

A

Arterioles

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6
Q

The __________ receives blood returning from the lungs

A

Left atrium

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7
Q

Large vessels that carry blood away from heart

A

Arteries

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8
Q

Oxygenated blood is found on

A

Left side of heart

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9
Q

Contractions that help push blood through the veins and back to heart :

A

Skeletal muscle contractions

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10
Q

The _____ node receives signal from SA node

A

Av

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11
Q

The heart can beat on its own without help from brain, therefore it is

A

Intrinsic

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12
Q

Relaxation of the heart muscle . Lowest arterial BP

A

Diastole

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13
Q

Largest artery in the body

A

Aorta

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14
Q

Membrane that surrounds the heart

A

Pericardium

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15
Q

Smaller blood vessels that carry blood back to heart

A

Venules

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16
Q

Pulmonary arteries carry blood to the

A

Lungs

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17
Q

The hepatic _____ vein takes blood from small int. Into liver

A

Portal

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18
Q

The ______ vena cava returns blood to the heart from lower body

A

Inferior

19
Q

Percentage of blood in ur arteries at any one time

A

20

20
Q

Most muscular of the heart chambers of the Heart

A

Left ventricle

21
Q

The ______ arteries and venoms take blood to and from kidneys

A

Renal

22
Q

The right ______ valve separates right atrium and ventricle

A

Atrioventricular

23
Q

________ circulation occurs on left side of heart

A

Systemic

24
Q

Veins returning blood from the head

A

Jugular

25
Q

The pulmonary _______ valve prevents back flow of blood as the right ventricle contracts to pump blood to lungs

A

Semilunar

26
Q

________ pressure is created by presence of salts and plasma proteins in blood

A

Osmotic

27
Q

This artery takes blood from the heart to the small int

A

Mesentric or mesentary

28
Q

This node is known as the pace maker

A

SA

29
Q

Expansion of blood pressure during systole

A

Pulse

30
Q

Substances tend to move into the cells on the ______ of the capillaries

A

Arterial

31
Q

How many layers of tissue in arteries , which are they?

A

3
1. Smooth muscle - gives strength and allows vessels to constrict and dialate
2. Elastic fibres (elastin) helps stretch and contract
3. Supporting tissue

32
Q

Device used for measuring bp

A

Sphygmomanometer

33
Q

When is BP lowest

A

In the venules and veins

34
Q

The type of muscle the heart is made out of

A

Cardiac

35
Q

Which arteries carry blood to the head

A

Carotid

36
Q

Substances tend to move out of the cells and into blood on the this side of capillary bed

A

Venous

37
Q

Structures in veins that help move blood up and prevent back flow

A

Valves

38
Q

Tiny blood vessels which deliver nutrients to cells

A

Capillaries

39
Q

Max contraction of the ventricles , highest bp

A

Systole

40
Q

Another name for left atrio ventricular valve

A

Bicupsid

41
Q

These arteries take blood to the heart

A

Coronary

42
Q

Th heart rate is affected by

A

Stress. O2levels excercise and bp

43
Q

Aoerta divides into the ______ arteries in h th he pelvic region

A

Iliac

44
Q

Layer found in the arteries which allows them to stretch

A

Elastic fibre layer, elastin

Biology 12 (9 decks)

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