Science for Active Learning 6 | 4th Edition - 5.2 Circulatory system

Heart

Pumps blood to the different parts of the body.

Blood

Is a fluid responsible for transporting.

Blood vessels

Transports blood to all parts of the body

Heart

Is a muscular organ about the size of your closed fist.

Septum

Separates the left and right sides of the heart.

Atria

Upper chamber of the heart.

Atrium

Singular form of Atria.

Ventricles

Lower chambers of the heart.

Thin walled atrium

Collects blood to the heart.

Thick walled ventricle

Pumps blood out of the heart.

Heartbeat

Is the result of alternating contraction and relaxation of the atria and ventricles.

Atrioventricular valves

Valves between an atrium and ventricle.

Tricuspid valve

Found between the right atrium and right ventricle ventricle.

Bicuspid valve

Found between the left atrium and left ventricle.

Semilunar valve

Set of valves located between arteries and ventricles.

Pulmonary semilunar valve

Found between the right ventricle and pulmonary artery.

Aortic semilunar valve

Found between the left ventricle and the aorta.

Blood

Is considered the River of life.

Blood cell

Refers to the solid component of blood.

Erythrocytes

The Scientific name for red blood cells.

Red Blood Cells

The most abundant blood cells.

Red bone marrow

Where red blood cells are produced.

Hemoglobin

Pigment that is the reason blood is red.

Leukocytes

Scientific name for white blood cells.

White Blood Cells

Bigger but lesser in number compared to red blood cells.

Platelets

Are the smallest blood cells.

Plasma

Is the liquid component and makes up 55% of the blood

Arteries

Are muscular, thick walled, and elastic blood vessels.

Pulse

The throbbing or vibrating movement that you can feel on your wrist.

Pulse rate

The number of heartbeats in one minute.

Veins

Are thin walled blood vessels that are more elastic than arteries.

Capillaries

Are the smallest and thinnest blood vessels.

Pulmonary and systemic circulation

The two types of blood circulation.

Pulmonary circulation

Happens between the lungs and the heart

Systemic circulation

Occurs between the heart and the rest of the body.

Hypertension

Also known as high blood pressure.

Sphygmomanometer

The instrument that measures blood pressure.

Systole

Measures the pressure in the arteries when the muscle contracts.

Diastole

Measures the pressure in the arteries when the heart muscle relaxers.

Arteriosclerosis

Is a disease caused by the buildup of cholesterol and fats in the arterial wall.

Anemia

Condition in which the body does not produce sufficient blood cells

Varicose veins

Results from the widening and bulging avenge due to defective or loose valves within the veins.

Leukemia

Is characterized by too much production of white blood cells in the blood.