Circulatory System

Question 0

Structures of circulatory system

Answer 0

Heart
Blood vessels
Blood

Question 1

Functions of the circulatory system

Answer 1

Deliver materials
Remove wastes
Regulate body temp
Fight disease

Question 2

What is the hearts job? (See packet also)

Answer 2

There is a right and left (opposite on paper) separated by septum.

Upper chambers are atrium receiving chambers.

Lower chambers are ventricles that act as pumps.

PACEMAKER: group of nerve cells in the atrium that tells the heart to contract, in breathing.

VALVES: separate atrium and prevent backflow of blood.

Question 3

What is the job of blood vessels? Arteries, veins, capillaries.

Answer 3

ARTERIES: carry blood away from heart. Thick walls because of pulsing new blood!!!!

VEINS: carry blood to heart, thinner walls and valves.

CAPILLARIES: tiny blood vessels surrounding alveolis allowing exchange of 02, C02, food and waste. Exchange with CELLS

Question 4

What is the job of blood, red and white cells?

Answer 4

It is the circulatory’s connective tissue made up of plasma, cells, and platelets.

Function: supply oxygen and nutrients to tissues and remove wastes.

Red blood cells: carry oxygen to cells.

White blood cells: immune cells to destroy invaders.

Question 5

What’s blood pressure?

Answer 5

A measure of the force of blood on walls of arteries.