Digestive & Urinary Systems
This system breaks down food so the body can absorb nutrients.
What is the digestive system?
This type of muscle is attached to bones.
What is skeletal muscle?
The brain and spinal cord make up this system.
What is the central nervous system?
Gas exchange occurs in these tiny air sacs.
What are alveoli?
This organ is the largest in the human body.
What is the skin?
This organ stores urine before it leaves the body.
What is the bladder?
The point where two bones meet is called this.
What is a joint?
This cell carries nerve impulses.
What is a neuron?
This blood vessel carries oxygen-rich blood away from the heart.
What is an artery?
This system protects the body from disease.
What is the immune system?
Most nutrient absorption occurs in this organ.
What is the small intestine?
This muscle is responsible for pumping blood.
What is cardiac muscle?
This gland is known as the "master gland."
What is the pituitary gland?
The main muscle used for breathing is this.
What is the diaphragm?
Homeostasis means maintaining this type of internal environment.
What is a stable internal environment?
These structures in the kidneys filter wastes from the blood.
What are nephrons?
Muscles work in pairs known as these.
Antagonistic Pairs
Chemical messengers released by endocrine glands are called these.
What are hormones?
This chamber of the heart pumps oxygenated blood to the body.
What is the left ventricle?
This body system includes glands that secrete hormones.
What is the endocrine system?
This process removes water from undigested food in the large intestine.
What is absorption?
The tendon connecting the calf muscle to the heel is this famous tendon.
What is the Achilles tendon?
This part of the neuron carries impulses away from the cell body.
What is the axon?
The protein in red blood cells that carries oxygen is this.
What is hemoglobin?
This feedback mechanism reverses a change to maintain balance.
What is negative feedback?