Login
Copyright

Cardiovascular System Overview Flashcards

Cardiovascular System Overview Flashcards
1/21 (missed) 0 0
Start Your Free Trial To Continue Studying

As a member, you'll also get unlimited access to over 35,000 lessons in math, English, science, history, and more. Plus, get practice tests, quizzes, and personalized coaching to help you succeed.

Free 5-day trial
It only takes a few minutes to set up and you can cancel at any time.
Already registered? Login here for access
Aortic Semilunar Valve
The valve found between the left ventricle and the arteries that supply blood to the rest of the body
Got it
Pulmonary Semilunar Valve
The valve found between the right ventricle and the lungs
Got it
Mitral (Bicuspid) Valve
The valve found between the left atrium and ventricle
Got it
Tricuspid Valve
The valve found between the right atrium and ventricle
Got it
Identify the Valves in the Heart

A: pulmonary semilunar valve

B: tricuspid valve

C: bicuspid/mitral valve

D: aortic semilunar valve

Got it
Ventricles
The bottom two (right and left) chambers of the heart that pump blood out of the heart
Got it
Atria
The top two (right and left) low-pressure chambers of the heart that passively drain into the lower chambers
Got it
Direction of Blood Flow in the Body
Deoxygenated blood enters right atrium->right ventricle->pumped to the lungs, where it picks up oxygen->oxygenated blood enters left atrium->left ventricle-> pumped to the rest of the body
Got it
Pulmonary Circuit

Circulates blood from the right side of the heart to the lungs and then back to the heart

At the lungs, carbon dioxide is removed and oxygen is added to the blood

Got it
Blood
The fluid within blood vessels that carries cell wastes, nutrients, and oxygen around the body
Got it

Ready to move on?

or choose a specific lesson: See all lessons in this chapter
21 cards in set

Flashcard Content Overview

Put your hand over your heart. If you are resting, you should feel your heart beating somewhere between 40 to 100 beats per minute, depending on your level of fitness. But what is the purpose of this beating? And what occurs with each beat? Those questions all pertain to the makeup and workings of the cardiovascular system, and this flashcard set will help you answer them. They will also give you a closer look at red blood cells, the messengers of the cardiovascular system, and some of the other organ systems within the body that work closely with the cardiovascular system.

Front
Back
Blood
The fluid within blood vessels that carries cell wastes, nutrients, and oxygen around the body
Pulmonary Circuit

Circulates blood from the right side of the heart to the lungs and then back to the heart

At the lungs, carbon dioxide is removed and oxygen is added to the blood

Direction of Blood Flow in the Body
Deoxygenated blood enters right atrium->right ventricle->pumped to the lungs, where it picks up oxygen->oxygenated blood enters left atrium->left ventricle-> pumped to the rest of the body
Atria
The top two (right and left) low-pressure chambers of the heart that passively drain into the lower chambers
Ventricles
The bottom two (right and left) chambers of the heart that pump blood out of the heart
Identify the Valves in the Heart

A: pulmonary semilunar valve

B: tricuspid valve

C: bicuspid/mitral valve

D: aortic semilunar valve

Tricuspid Valve
The valve found between the right atrium and ventricle
Mitral (Bicuspid) Valve
The valve found between the left atrium and ventricle
Pulmonary Semilunar Valve
The valve found between the right ventricle and the lungs
Aortic Semilunar Valve
The valve found between the left ventricle and the arteries that supply blood to the rest of the body
Diastole
The phase of the cardiac cycle in which the heart relaxes, specifically the ventricles of the heart
Systole
The phase of the cardiac cycle in which the heart contracts, specifically the ventricles of the heart
Cardiac Cycle

The events that take place within the heart that make up a single heartbeat

Made up of two phases: diastole and systole

Intrinsic Conduction System
A property of the heart that allows its cells, known as cardiac muscles fibers, to contract rhythmically in the absence of signals from the nervous system
Cardiac Output (CO)

A measure of the amount of blood pumped by each ventricle per minute

CO = heartbeats per minute (heart rate) x volume of blood pumped per heartbeat (stroke rate)

Factors Affecting Blood Flow

More viscous (thicker) blood = more resistance to blood flow

Longer blood vessel = more resistance to blood flow

Pressure differences

Smaller blood vessel radius = more resistance to blood flow

Poiseuille's Law

States that a vessel's internal radius (from its middle to its outside edge) to the 4th power equals its blood flow (radius doubles, blood flow increases 16X)

Larger radius = larger blood flow

Edema
Occurs when excessive leaked fluids from blood capillaries, normally collected by lymphatic capillaries, remains in tissue spaces, causing swelling
Type O Blood
Found in people whose red blood cells have neither A or B antigens on their surface
Rh Factor

An antigen found on red blood cells

Cells with the antigen: Rh+

Cells without antigen: Rh-: will NOT make antibodies until exposed to Rh+ blood cells, such as during a transfusion or Rh+ pregnancy

Erythroblastosis Fetalis

A life-threatening condition for an Rh+ fetus in an Rh- mother who has made antibodies against the Rh factors, often due to a previous Rh+ pregnancy

Mother's antibodies attack fetus's blood cells

To unlock this flashcard set you must be a Study.com Member.
Create your account

Unlock Your Education

See for yourself why 10 million people use Study.com

Become a Study.com member and start learning now.
Become a Member

Already a member? Log In

Support