Human Systems
What is the main function of the circulatory system?
The transportation of nutrients, gases, and waste all throughout the body.
What is the main function of the lungs?
Take in oxygen and removes carbon dioxide.
What is the function of the mouth?
It begins digestion by chewing food and mixing it with saliva.
Describe the heart.
A muscle that pumps blood throughout the body.
What is the function of the brain?
It controls the body: thoughts, movements and emotions.
What is urine?
Liquid waste filtered out of the blood.
What is the main function of the digestive system?
Break down food and absorb nutrients, eliminating solid waste.
What is the trachea?
The tube that links the nose and mouth to the lungs that air passes through.
What is the function of the stomach?
What are arteries?
Blood vessels that carry oxygenated blood throughout the body, typically away from the heart.
What is the function of the spinal cord?
It is like the highway, connecting and passing messages between the brain and the nerves all over the body.
What is the function of the bladder?
It stores the urine until it is ready to be released out of the body.
What is the main function of the respiratory system?
The exchange of oxygen gas necessary for life wuth the waste gas carbon dioxide.
To moisten, warm, and filter the air before it reaches the lungs.
What is the function of the small intestines?
What are veins?
Blood vessels that carry oxygen-poor blood, typically flowing towards the heart.
What are the 2 types of nerves and their functions?
Motor nerves - take messages from the brain to the rest of the body telling it what to do.
Sensory nerves - Take messages to the brain telling it about what it happening outside the body.
What is the urethra?
It is the tube through which urine goes from the bladder and exits the body.
What is the main function of the excretory system?
Filter waste products from the blood for removal and balance the level of water.
What are the alveoli?
The tiny air sacs where the gases oxygen and carbon dioxide are enter and exit the blood.
What is the function of the large intestines?
What are capillaries?
Tiny blood vessels where oxygen and nutrients are delivered to the cells and waste is picked up.
Describe the Central nervous system vs the peripheral nervous system.
The central nervous system processes information and send out commands, made of the brain and spinal cord.
The peripheral nervous system is made of all the nerves not in the CNS and connects the whole body to the CNS.
What are the ureters?
These tubes link the kidneys to the bladder. Urine that is filtered out of the blood passes through them to be stored in the bladder.
What is the main function of the nervous system?
Control the body's muscle movements, co-ordinates all organ systems and receives sensory information.
What is the diaphragm?
This muscle helps you breathe by moving up and down.
What is the function of the liver?
Creates bile needed to absorb fats. It also filters the blood, removing toxins.
What are the 2 types of blood cells and their functions?
Red blood cells - carry oxygen
White blood cells - defensive cells that attack bacteria.
Describe somatic and autonomic nervous systems.
The somatic nervous systems controls the voluntary movements of muscles
The autonomic nervous system the involuntary functions like heart rate and breathing
What is the function of the kidneys?
The kidneys filter your blood. They remove excess salt and water through diffusion and osmosis. This happens in tiny structures called nephrons. The waste filtered out is called urine.