Heart Flashcards
(30 cards)
What is blood separated into?
Plasma (45%) formed elements (45%)
Red blood cells
Form of disks.
- Transport oxygen with the protein called hemogloben
- Transports C02
White blood cells
Provide immunity and défense against disease
Platelets
Help in blood clotting process
Cardiovascular system
The transportation system used by blood
The cardiovascular system includes:
Blood
Blood vessels
The heart
Blood vessels are divided in 3
Arteries
Capillaries
Veins
Arteries
Blood vessel that carries blood from heart to other parts of the body
They r the largest
Thick walls to withstand high pressure
Capillaries
Blood vessel with a small diameter and AND very thin walls in which exchanges between the blood and the cells of organs can occur
- smallest blood vessels
- move in single file line
- their walls are made form a single layer of cells
Veins
A blood vessel that carries blood back to the heart
- once the capillaries have passed the organs they reunite to form veins
- pressure inside the veins is very low and they need muscular contractions to move the blood
- veins in our lower body also have valves so that blood can flow downwards
The four chambers
- right atrium
- left atrium
- right ventricle
- left ventricle
What would happen without the heart
Blood would not circulate throughout the body
Valves
To make blood. Don’t go backwards
Pulmonary artery
Brings c02 rich blood to th slung
Pulmonary vein
Brings 02 vrich blood back to the heart
Aorta
Distributes o2 rich blood to the entire body
Why is the heart a double pump
It simotaniously pump both sides of the heart
Pulmonary circulation
- right side of heart
- short
- rich in co2
- blood exits the right ventricle and goes to lungs through pulmonary artery. It exchanges co2 for o2 in the capillaries of the lungs and returns to the left atrium through the pulmonary vein
Systemic circulation
- left side
- longer (goes through whole body)
- rich in o2
- blood exits the left ventricle through aorta which divides into arteries that go to the capillaries of the various organs. Gets rid of o2, nutrients and other substances and picks up co2. Then it goes back to the heart and goes into the right atrium through the vena cava.
Plasma
Yellowish liquid made of 90% r
I.T contains: nutrients, antibodies, hormones, and waste from cellular activity
- transports nutrients to cells
- transports waste des form cellular activity to excretatory
- transports hormones, antibody, proteins, and others
Blood transfusions
Entails the injection of blood into a person
Blood donor
Person who gives blood
Blood recipient
Person who receives blood
Important rule about blood transfusion
The donors red cells blood membrane must not carry instances that differ from those in the red blood cell membrane of the recipient
