Circlatory System

Question 1

Function of the circulatory system

Answer 1

• The system transports oxygen, nutrients and waste products
• regulates body temperature
• protection against diseases, toxic substances, and blood loss

Question 2

Mammalian circulatory system

Answer 2

An closed circulatory system that pumps blood through two different circuits
1) pulmonary circuit
2) systemic circuit

Question 3

Pulmonary circuit

Answer 3

Carries deoxygenated blood from the heart to the lungs where carbon dioxide is exchanged for oxygen, and then back to the heart to be distributed around the body

Question 4

Deoxygenated blood pathway

Answer 4

1) From the superior and inferior vena cava, deoxygenated blood is carried into the right atrium.

2) through the tricuspid valve, the blood enters the right ventricle

3) through the pulmonary valve the blood is pumped to the lungs through the pulmonary artery, which gas exchange occurs and then will come back to the heart

Question 5

Systemic circuit

Answer 5

Delivers oxygenated blood from the heart to the rest of the body, and brings deoxygenated blood back to the heart

Question 6

Oxygenated blood pathway

Answer 6

1) after the blood is oxygenated in the lungs, the blood is carried into the left atrium through the pulmonary veins (left and right)

2) the blood leaves the left atrium through the bicuspid valve into the left ventricle

3) through the aortic valve the blood leaves the left ventricle through the aorta which passes blood through the body

Question 7

Heart

Answer 7

A muscular (cardiac muscle) organ that pumps blood through the circulatory system to be distributed around the body

Question 8

Blood vessels

Answer 8

Are the pathway in which blood travels through, it includes veins, arteries, capillaries

Question 9

Blood carries..

Answer 9

Blood carries the oxygen, nutrients and product waste

Question 10

The three major components to the circulatory system

Answer 10

1) heart
2) blood vessels
3) blood

Question 11

Artery (blood vessel)

Answer 11

Carries oxygenated blood away from the heart and to the rest of the body, except the pulmonary artery which pumps deoxygenated blood to the lungs

Question 12

Veins

Answer 12

Carry deoxygenated blood towards the towards the heart, except the pulmonary veins which carry oxygenated blood

Question 13

Capillaries

Answer 13

Thin blood vessel where gas exchange occurs

Question 14

Two main elements of blood

Answer 14

1) Fluid portion, called plasma, which is made of water (90%) and dissolved gases, nutrients, and waste products

2) solid portion, called formed element, which consist of red and white blood cells, and platelets

Question 15

Red blood cells

Answer 15

• Makes up about 44% of the blood volume
• Due to their hemoglobin, the are specialized in transporting oxygen

Question 16

White blood cells

Answer 16

• What up about 1% of the blood volume
• Released by the immune system, the fight infections and bacteria, providing immunity

Question 17

Platelets

Answer 17

• Play a key role in blood clots
• when injured, they rupture releasing chemicals and form a temporary plug at the site of injury. If Calcium is present more reactions happen, producing fibrin over the injury
• the are formed in bone marrow

Question 18

Heart location

Answer 18

Left side on the theocratic cavity

Question 19

How does the Heart beat..

Answer 19

Cardiac muscle contracts and relaxes rhythmically and involuntarily which produces that beating

Question 20

Does oxygenated blood and deoxygenated blood ever meet?

Answer 20

No they are kept separated

Question 21

Does oxygenated blood and deoxygenated blood ever meet?

Answer 21

No they are kept separated

Question 22

What separates the left and right side of the heart?

Answer 22

The left and right side of the heart is separated by the septum

Question 23

The 4 chambers

Answer 23

Atriums
- left
- Right
Ventricles
- left
- right