quiz 3 life scince

Veins

Veins always carry blood to the heart. Almost always carry deoxygenated blood. Pulmonary veins are the only veins that carry oxygenated blood. Carry blood from the lungs to the left atrium.

The blood flows in our body in two circuits:

Pulmonary system and Systemic System

Arteries

Arteries always carry blood away from the heart. Almost always carry oxygenated blood. Pulmonary arteries are the only arteries that carry deoxygenated blood. Carry blood from the right ventricle to the lungs.

Arteries, veins and capillaries

Arteries always carry blood away from the heart. Almost always carry oxygenated blood. Exception are the pulmonary arteries. Pulmonary arteries are the only arteries that carry deoxygenated blood. Veins always carry blood to the heart. Almost always carry deoxygenated blood. Exception are the pulmonary veins. Pulmonary veins are the only veins that carry oxygenated blood. Site of gas exchange occur around the capillaries.

The heart

is a muscular pump controlled by electrical impulses that circulates blood throughout your body.

The blood

is responsible for: Giving Oxygen and nutrients to tissues. Taking Carbon Dioxide (CO2) and (waste products from metabolism) away from tissues.

Systemic system

oxygenated blood is pumped from the heart to the rest of the body and back

Blood pressure is measured by

systolic pressure over diastolic pressure.

Does the heart receive any nutrients from the blood it pumps

Heart itself does not receive any nutrients from the blood it pumps. Instead, it receives own supply of blood through the coronary arteries. These are the arteries that get blocked that cause most heart attacks

Why is the left ventrical larger ?

Left ventricle is larger: Pump blood throughout the entire body

Normal blood pressure is around

120/80

Human heart pumps how many gallons of blood perday?

4000

How fast does the average human heart beat per min ?

72 beats per minute

Second heartbeat

Diastole refers to diastolic, which is defined as the phase of the heartbeat that is between two contractions during which the heart muscle relaxes and fills with blood.

Capillaries

Enable the exchange of water, oxygen, carbon dioxide, many other nutrient and waste between blood and surrounding tissues. Smallest blood vessels in our body 5-10 micrometers

First heartbeat

Systole (Systolic pressure), which is defined as the phase of the heartbeat in which the ventricles contract to force blood into the arteries

The circulatory System is divided into three major parts:

The Heart Arteriers The Blood Veins The Blood Vessels: Capillaries

Pulmonary system

heart pumps oxygen-poor blood to the lungs, where oxygen is taken up and carbon dioxide is given up. The oxygenated blood then flows back to the heart.

Oxygenated blood-

lung- pulmonary veins - left atrium - left ventricle- aorta- to de rest of the body.

Deoxygenated blood-

superior and inferior vena cava right atrium right ventricle - pulmonary arteries Lungs