What are the four main components of our blood?
plasma, red blood cells, white blood cells, platelets
This organ makes gastric juices that break down the food and kill dangerous bacteria.
the stomach
When does our body produce sweat? How does it help us?
We produce sweat when we are hot or when we exercise. It helps us cool down.
What system extracts nutrients from food and eliminates waste products?
the digestive system
This system carries blood around the body.
the circulatory system
What do sweat glands do?
Sweat glands eliminate waste called sweat.
What are the 3 types of blood vessels?
arteries, capillaries, veins
What happens to the diaphragm and ribcage when we breathe out? (exhalation)
The diaphragm goes up and the ribcage contracts.
This system takes oxygen from the air we breathe in and eliminates carbon dioxide.
the respiratory system
This system eliminates waste products and includes the urinary system and the sweat glands.
The excretory system
Where are the nutrients absorbed into the blood?
The nutrients are absorbed into the blood through the small intestine.
the trachea, bronchi, bronchioles, alveoli, and capillaries are a part of what system?
the respiratory system
The heart is divided into _____ chambers. What are they called?
4, they are called the right atrium, left atrium, right ventricle, and the left ventricle.
What happens to the diaphragm and ribcage when we breathe in? (inhalation)
The diaphragm goes down and the ribcage expands.
How does the urine leave the bladder?
Urine leaves the bladder through the urethra.
Where are waste products removed? (renal arteries, bladder, kidneys, or urine)
the kidneys
What is the outer layer of the skin called? and the inner layer?
The outer layer is called the epidermis and the layer below is called the dermis.
What do the ureters do with urine?
They carry the urine from the kidneys down to the bladder.