By: Zoe Brecht, Zoey Pierce, Elaine Cooper,
and Renna Black
Circulatory System
Veins and Arteries
Arteries are red vessels that carry blood away from the
heart. There are a couple different types, which include
pulmory and systemic arteries. The blood flows from the
heart to various different parts of the body.
Veins carry deoxygenated blood (with an exception of
pulormy veins and umbilical vein. Some types of veins are
superficial veins, deep veins, pulmory veins, and systemic
veins. The blood flows from various parts of the body to the
heart. There are thin, elastic muscle layer with semilunar
valves that prevent the blood from flowing in the opposite
direction. Viens are blue blood towards the heart
capacitance vessels.
Vocab
Hypotension: Low blood pressure
Hypertension: High blood pressure
Stroke: Loss of brain function, caused by the interuption of
blood flow or the rupture of blood flow
The
heart
by: zoe, Zoey, renna, and Elaine
What the heart does.
 The heart is a key organ in the circulatory system. As a
hollow, muscular, pump. Its main function is to propel
blood throughout the body. It usually beats from 60-100
times per minute, but can go much faster when needed.
It beats around 100,000 times per day, more than 30
million times per year, and about 2.5 billion times in a
70 year lifetime. The heart gets messages from the body
that tell it when do pump more or less blood depending
on a persons needs.
Where the heart lies.
 The heart has 4 chambers that are enclosed by thick,
muscular walls. It lies between the lungs and just to the
left of the middle of the chest cavity. The bottom part of
the heart is divided into 2 chambers called the right and
left ventricles, which pump blood out of the heart. A wall
called the interventricular septum divides the ventricles.
What the heart is made of.
 The heart is made up of four different blood filled areas.
The two chambers on the top are called the atria (AYTREE-UH). The right and left atria receive the blood
entering the heart. Two other cardiac valves separate
the ventricles and the large blood vessels that carry
blood leaving the heart. These are the pulmonic valve,
which separates the right ventricle from the pulmonary
artery leading to the lungs, and the aortic valve, which
separates the left ventricle from the aorta, the body's
largest blood vessel.
blood
By Elaine
Red blood cells
Most of the cells in blood are red blood cells. They carry
around an important chemical called hemoglobin that gives
off its red color.
The hemoglobin in blood delivers oxygen, which you get
from the air you breathe, to all the parts of alive.
White blood cells
White blood cells are bigger then red blood cells, Once your
sick, your body makes more white blood cells to protect
you. There are many white blood cells in your body.
Types of white blood cells
 Granulocytes- Granulocytes are phagocytes, that are
they are able to ingest foreign cells such as bacteria,
viruses and other parasites. Lymphocytes- Lymphocytes
are cells which help to regulate the body's immune
system
 Monocytes- Monocytes can develop into two types of
cells: Dendritic cells and Macrophages cells.
Types of blood
 Types of blood;
A negative
A positive
B negative
B positive
O negative
O positive
Ab negative
Ab positive
What is blood?
Blood is basically a type of connected tissue which is found
in the human body in fluid state. It is made of plasma
which is highly vicious liquid. On average people have
approximately 5.5 liters of blood.
Capillaries and Diseases
You know who wrote this… if you don’t then it was the
internet #-#
Capillaries
 Are the smallest of the body's blood vessels. They are
only one cell thick and they are the site of the transfer of
oxygen and of the nutrients from the blood stream to
other tissues in the body; they also collect carbon
dioxide waste materials and fluids for return to the
veins.

Atherosclerosis-literally ‘hardening of the fatty stuff; high fat diets can lead to
formation of fatty plaques lining blood vessels.
Diseases
Causes:
•High Blood Pressure.
•High levels of cholesterol.
•Smoking.
•High levels of sugar in the blood
https://www.youtube.com/watch?v=M
W0z3RKncr4