Science

Question 1

The blood moves from the heart to the lungs and back to the heart.

Answer 1

Type of Ciruclation: Pulmonary

Question 2

The blood moves within the heart. coronary arteries provide oxygenated blood to the heart muscle, while the coronary veins remove the blood once it has been oxygenated.

Answer 2

Type of Circulation: Coronary

Question 3

The blood circulates from the heart to the rest of the body.

Answer 3

Type of Circulation: Systemic

Question 4

Blood from various parts of the body returns to the heart through ______.

Answer 4

Veins

Question 5

The deoxygenated blood from the body enters the _______ of the heart through the vena cava.

Answer 5

Right Atrium

Question 6

The right atrium contracts, pushing blood into the______ through the tricuspid valve.

Answer 6

Right Ventricle

Question 7

The right ventricle contracts, sending blood through the pulmonary valve into the pulmonary arteries, which carry it to the ______.

Answer 7

Lungs

Question 8

In the lungs, blood passes through ________ where it picks up oxygen and releases carbon dioxide.

Answer 8

Capillaries in the lungs.

Question 9

Oxygenated blood returns to the heart from the lungs via the pulmonary veins, entering the ____________.

Answer 9

Left Atrium

Question 10

The left atrium contracts. pushing blood into the left ventricle through the mitral valve.

Answer 10

Left Ventricle

Question 11

The left ventricle contracts, sending oxygen-rich blood through the aortic valve into the aorta, which distributes it throughout the body.

Answer 11

Aorta

Question 12

55 percent of blood fluid,
yellowish fluid.

Answer 12

Plasma

Question 13

It absorbs oxygen and is bright red in color due to the iron-containing protein called hemoglobin.

Answer 13

Red blood cells / Erythrocytes

Question 14

less than 1 percent
of the blood, fight foreign
materials or
pathogens like virus
and bacteria

Answer 14

White blood cells / Leukocytes

Question 15

Responsible for blood clotting, smaller than red and white blood cells.

Answer 15

Platelets / Thrombocytes

Question 16

Air enters the respiratory system through the _________ and _______. The ______ filters, warms, and humidifies the air, while the _______ is an alternate entry point, especially during heavy breathing.

Answer 16

Nose / Mouth

Question 17

The ________ serves as a passageway for both air and food. It connects the nasal and oral cavities to the larynx and esophagus.

Answer 17

Pharynx / Throat

Question 18

The _______ is located below the pharynx and contains the vocal cords. It also plays a role in protecting the trachea by preventing food from entering the airways, Also known as the voice box.

Answer 18

Larynx / Voice box

Question 19

The ______ is a tube that connects the larynx to the bronchi. It is supported by C-shaped rings of cartilage, which keep the airway open, Also known as the windpipe.

Answer 19

Trachea

Question 20

The trachea divides into two main ________ (left and right), each leading to one lung. The ________ further divides into smaller ________ within the lungs.

Answer 20

Bronchi

Question 21

The bronchi branch into smaller tubes called _________. These further subdivide into even smaller branches, leading to the alveoli.

Answer 21

Bronchioles

Question 22

The ________ are tiny air sacs at the end of the bronchioles. They are the site of gas exchange, where oxygen is absorbed into the blood, and carbon dioxide is released from the blood to be exhaled.

Answer 22

Alveoli