CLR review + Digestive and Urinary Flashcards
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A collection of organs whose primary function is to transport fluids around the body inside of vessels
circulatory system
what are the 2 circulatory systems in the human body?
Cardiovascular and Lymphatic
is the cardiovascular system an open or closed system?
closed
why is the cardiovascular system a closed system?
it transports blood around the body inside blood vessels
is the lymphatic system an open or closed system?
open
definition of cardiovascular system
A collection of organs whose primary function is to transport blood around your body to deliver nutrients to and take waste products away from each of your body’s cells.
additional functions of cardiovascular system (4)
-transports gasses (o^2 to cells and CO^2 away from cells) nitrates, glucose, hormones and other nutrients and waste products
-contain white blood cells to help fight infection
-stabilize the body’s pH levels
-help the body maintain its constant internal temp.
A connective tissue made up of two types of cells (RBCs & WBCs), cell parts (Platelets), and plasma (fluid part of blood).
blood
The fluid part of blood that is a mixture of water, minerals, nutrients, sugars, proteins and other substances. (RBCs, WBCs & Platelets float in the plasma)
plasma
Blood cells that transport oxygen to each of your body cells.
red blood cells
Blood cells that help you stay healthy by destroying pathogens (things that cause disease) and helping clean wounds.
White blood cells
a cell fragment that helps clot the blood
platelets
blood flows away from the heart
Arteries
blood flows towards the heart
veins
capillaries
arteries connect to veins. This is where nutrient transfer occurs
the upper chamber of the heart
Atrium
the lower chamber of the heart
Ventricle
label heart
yes
Flaplike structures that are located between the atria and ventricles to prevent blood from flowing backwards.
valve
what two parts are valves found in
heart and large veins
where is blood made
bones
Systemic circulation
The circulation of blood between the heart and the body. (It starts off oxygen rich and delivers oxygen & other nutrients (glucose, & hormones) and picks up carbon dioxide & other wastes
from all the body cells. It returns to the heart oxygen poor.)
pulmonary circulation
The circulation of blood between your heart and lungs. (It starts off oxygen poor and goes to the lungs to pick up oxygen and drop off carbon dioxide. It returns to the heart oxygen rich.)
Coronary circulation
The circulation of blood to the heart. (keeps the heart alive)
main function of lymphatic system
A collection of organs whose primary functions are to collect extracellular fluid from tissue and return it to the blood AND fight infections
additional functions of the Lymphatic system (2)
-transport fatty acids
-transport immune cells to fight disease
how is lymph pushed through lymph vessels
contraction of skeletal muscles (movement)
Lymph Nodes
Small, bean-shaped organs that remove pathogens and dead cells from lymph.
lymph vessels
Thin-walled vessels that carry lymph back to lymph nodes.
Bone Marrow in Lymph system
Soft tissue inside of bones where blood cells are made (WBC’s).
Tonsils
Organs at the back of the throat that help defend the body against infection.
Thymus
An organ in the chest where WBC’s made from bone marrow finish developing.
Spleen
An organ that stores WBC’s and also allows them to mature and can release WBC’s to the bloodstream.
main function of respiratory system
A collection of organs whose primary function is to take in oxygen and expel
carbon dioxide.
Additional functions of the Respiratory System
(3)
- Gas exchange – absorbs O2 from the air and expels CO2 from the body.
- Secretes molecules to aid in lung defense.
- Allows you to talk.
Nose / Mouth in respiratory system
The passageways through which air enters and leaves the body.
Pharynx
The upper portion of the throat – the very back cavity of the mouth that opens into the larynx (respiratory system) or esophagus (digestive system).
Larynx
A cartilaginous structure at the top of the trachea that contains the vocal cords (voice box).
Trachea
The passageway for air traveling from the larynx to the lungs (windpipe).
Bronchi
The two air tubes the trachea splits into within the lungs that connect to the bronchioles.
Bronchioles
the smaller tubes the bronchi split into that lead to the alveoli.
Thousands of tiny sacs at the ends of the bronchioles in the lungs
that contain air.
Alveoli
A pair of organs situated in the rib cage, consisting of elastic sacs with branching passages into which air is drawn, so that oxygen can pass into the blood and carbon dioxide be removed.
Lungs