ORGAN SYSTEMS Flashcards
(11 cards)
What are the Functions of the circulatory system?
The circulatory system is an organ system that includes the heart, the blood vessels, and the blood itself. It has three functions:
• to transport materials (i.e., nutrients and oxygen) and cells from one place to
another
• to defend the body against invasion by harmful organisms by taking white
blood cells to an area of injury or infection
• to maintain a constant body temperature
What is blood? What is its function?
Blood circulates through the body delivering nutrients and removing waste materials. Blood is made up of red blood cells, white blood cells, and platelets all suspended in plasma.
What is plasma?
About 55% of your blood is made up of plasma. Plasma is a liquid made up of proteins, minerals, dissolved salts, and water.
What are Red blood cells (RBC’s)? What do they do?
Your body produces two million red blood cells every second. Red blood cells are responsible for carrying oxygen from your lungs to your cells and for carrying carbon dioxide from your cells to your lungs where it is exhaled.
What do white blood cells do?
White blood cells defend the body against attack from foreign organisms, such as bacteria and some viruses and form antibodies that protect the body from future attacks. If the invading organism is larger, a number of white blood cells surround and consume it.
What are Platelets? What do they do?
Platelets contain the enzymes needed to turn clotting agents into fibrin—fibrous strands that heal wounds. Platelets collect around the edges of a wound, break themselves open, and release enzymes that promote the chemical reaction needed to heal the wound.
What are the 3 blood vessels?
The 3 blood vessels are Arteries, veins and capillaries.
What are the functions of the skeletal system?
The function of the circulatory system are: 1. Protect: protect our vital organs 2. Support: Gives our bodies a shape 3. Movement: works with muscles to allow us to move. 4. Blood: Bone marrow makes blood cells. 5. Storage: Stores nutrients like calcium that makes bones hard.
What are the 5 major components of the skeletal system?
The major components of the skeletal system are:
1. Bones- Rigid organs that form the endoskeleton of
vertebrate animals
2. Cartilage-Stiff yet flexible tissue that connects
different parts of the body.
(ears, nose, etc)
3. Ligaments- Loose tissue that connects bone to bone
4. Joints- The place where two or more bones make
contact (knees, fingers, elbows)
5. Tendon- Connects muscle to bone.
What are the 3 major type of joints?
Major joints - 1. Pivot Joint: Rotating joints that allow rotation around an axis. Example: Neck 2. Ball-and-Socket Joint: Most manoeuvrable joint that allows forward, backward, and circular movement. Example: Hip 3. Hinge Joint: Opens and closes like a door. Example: Elbow
What are the functions of the muscular system?
Functions: 1. Enables body to move 2. Homeostasis: Produces heat that helps body maintain constant temperature. 3. Helps give the body its posture and overall shape. Supports neck and head.
