Most muscles work in pairs, if one contracts the other _____
What is the relaxes?
This connects the mouth and stomach.
What is the esophagus?
Finger bones are called
What are phalanges?
Tiny cells which send signals to the brain. They are also known as nerve cells.
What are neurons?
These disc shaped cells transport oxygen from the lungs to the other parts of the body.
What are red blood cells?
The leg bone which is connected to the hip.
What is the femur?
The second layer of the skin.
What is DERMIS?
Anything that can trigger a physical or behavioral change. examples are loud noises, bad smells, itch,
What are stimuli?
Identify number 1
What is the dendrites?
These blood cells are a vital part of the body's immune system.
What are white blood cells?
Three types of muscles
What are skeletal, smooth & cardiac muscles?
The millions of tiny finger-shaped structures cover the inner surface of the small intestine and provide a large surface area through which digested food is absorbed.
What are the villi?
This chemical is in the air we breathe and we need it to survive.
What is oxygen?
Types of neurons found in the body
What are motor, sensory, and interneurons?
Hollow organ approximately, the size of your clenched fist. It pumps blood throughout our body
What is the heart?
The internal, and spongy, portion of the bone that produces blood cells.
What is the bone marrow?
Explain melanin, and what it has to do with people of light and dark skin.
Melanin is a dark pigment that absorbs UV rays. The darker the person, the more melanin it has. The lighter the person, the less melanin it has.
A process by which a living organism can maintain internal stability while adjusting to changing external conditions
What is homeostasis?
Central nervous system - brain and spinal cord it is responsible for forming thoughts and generating various actions throughout the body.
Peripheral nervous system - allows the central nervous system to send and receive information to and from all parts of the body.
The three types of blood vessels.
What are arteries, veins, and capillaries?
The _____ skeleton is the central part of the skeleton used to protect vital organs such as the brain, heart, and lungs.
What is the axial skeleton?
What are duodenum, Jejunum, and Ileum?
Four parts of blood
What are red blood cells, white blood cells, plasma, platelets?
Explain how the nervous system works.
Compare Aorta and Vena cava.
Aorta - Blood from the heart to the body.
Vena cava - Blood from the body to the heart.