Circulatory System (Q1) Flashcards
The system in the body that transports nutrients or substances
Circulatory System
Two types of Circulatory Systems
Open Circulatory System & Closed Circulatory System
Which type of Circulatory System is this?
- Blood is contained within blood vessels
- Applies to mammals (including humans), fish, birds, reptiles, and amphibians
- Cardiovascular System
Closed
Which type of Circulatory System is this?
- No blood vessels
- Flows into open sinuses surrounding internal organs
Open
Parts of the Cardiovascular System
- Blood
- Blood Vessels
- Heart
Purpose of Blood
- Regulates body temperature
- Fights against diseases
- Carries nutrients and waste to/from different parts of the body
What are the 3 Formed Elements?
- Red Blood Cells
- White Blood Cells
- Platelets
Red Blood Cells are also called…
Erythrocyte
Function of RBCs
- Deliver oxygen
- Carry nutrients & carbon dioxide
What element gives RBCs their red color?
Iron
Oxygen-carrying blood is called..
Oxygenated blood, and it is brighter in color
Carbon-dioxide carrying blood is called…
Deoxygenated blood, and it is darker in color
White Blood Cells are also called…
Leukocyte
Function of WBCs
- Fight foreign organisms
Which formed element is known for having many different types?
WBCs
Platelets are also called..
Thrombocytes
Function of Platelets
- Prevents & stops bleeding
- Is responsible for blood clotting
Which of the formed elements will be activated when it detects a wound?
Platelets
Compare the size of the formed elements (biggest to smallest)
WBC - RBC - Platelets
Compare the abundance of the formed elements (most to least)
RBC - Platelets - WBC
Plasma is..
- Made of mostly water
- Composed of proteins, ions, etc.
- The reason why blood is liquid
What percentage of plasma is made of water?
90%
Function of Blood Vessels
- Help blood circulate
Acronym for Blood Vessels
A - away
V - back
C - change
What are the 3 Types of Blood Vessels?
- Arteries
- Veins
- Capillaries
Function of Arteries
Commonly carry oxygenated blood AWAY
Function of Veins
Commonly carry deoxygenated blood BACK to the heart
Function of Capillaries
Because it is the THINNEST, it is where the EXCHANGE of gases & nutrients occur
What is the main part of the cardiovascular system?
The heart
Function of the Heart
- Pumps blood throughout
- Delivers waste products (deoxygenated blood) back to the lungs to be removed
Chambers of the Heart
- Left Atrium
- Right Atrium
- Left Ventricle
- Right Ventricle
What are the receiving chambers of the heart?
The upper chambers, left & right atria
Which chambers of the heart pump blood out of your heart?
Lower chambers, right and left ventricles
Which muscle separates oxygenated and deoxygenated blood?
Septum
What is the purpose of valves in the hearts?
It serves as a way for blood to enter the heart
What are the 4 valves of the heart?
- Pulmonic Valve
- Mitral Valve
- Aortic Valve
- Tricuspid Valve
Which side of the heart contains oxygenated blood?
The Left side
Which side of the heart contains deoxygenated blood?
The right side
Which chambers of the heart have thinner walls?
Left and Right Atria
Which chambers of the heart have thicker walls?
Left and Right Ventricles
Which chambers of the heart have thicker walls?
Left and Right Ventricles
Which is the thinnest of the blood vessels?
Capillaries
What is the purpose of heart valves?
Prevent the backward flow of blood
Purpose of coronary artery
Their main function is to supply blood to the heart
