Nervous System
What are the two main parts of the human nervous system?
Brain and Nerves
What is the first step in digestion that happens in the mouth?
Chewing and Chemical digestion through saliva
What is the main function of the excretory system?
To remove liquid wastes from the body.
What are the specialized cells call that send messages to the nerves? Daily Double! What are the two types we learned about?
Nuerons
Motor Nuerons and Sensory Nuerons
What happens in the stomach?
The stomach acid chemically breaks it down. It also churns to mechanically break down the food.
Name three organs that are part of the excretory system.
The skin, kidneys, and lungs
How do neurons help the body respond to the environment?
Neurons receive information from the environment, like smelling, hearing, and seeing, to be able to react
What is the main function of the small intestine in digestion?
To absorb nutrients and send it throughout the body through the blood stream as energy.
How does the skin help with excretion?
The skin releases excess salts through sweating.
Explain the path a message takes from sensing something outside the body to making the body respond.
The sensory neurons detect signals outside the body, send the messages through the nerves to the brain, the brain sends the messages to the motor nerons
Describe the path food takes through the digestive system from mouth to large intestine.
Food moves from the mouth to the stomach through a tube-like structure, then into the small intestine, and finally into the large intestine.
What do the kidneys do in the excretory system?
The kidneys filter waste products from the blood.
Why do animals have nerves branching from the spinal cord to different parts of the body? How does this help them survive?
The branching nerves allow messages to be sent quickly between the brain and different body parts, helping animals detect danger, find food, and react properly to their environment, which helps them survive.
How long does it take to digest food, how long with your digestive system stretch, which one is bigger the small intestine or the large intestine?
2-4 days, 30 feet, the small insestine
What path does liquid waste take through the excretory system?
through the kidneys, down the ureters, to the bladder, out the urethra