Cornell Notes 13 Flashcards
Why do human body systems need to work together?
Human body systems work together to perform all the necessary functions for life.
Example: Cells need oxygen provided by the respiratory system and transported by the circulatory system, which are controlled by the nervous
and endocrine system
What three body movement systems work together to cause movement?
skeletal, muscular, and nervous
What do each of the three movement systems do to cause movement?
- Muscles are attached to bones and provide a force that can move the bones
- Muscle contracts: is shortens and pulls on the bones it is attached to (skeletal)
- Your brain (the nervous system) sends signals to your muscles to make them contact
what are the 2 ways the body has communicating and controlling functions (include what body system they are a part of)?
1) Electrical signals from nerves (nervous system).
2) Chemical signals (hormones) (endocrine system).
What things do cells need to bring in?
All cells need is oxygen and nutrients
What things do cells need to get rid of?
All cells need to get rid of carbon dioxide is other wastes
What is the job of blood in terms of getting cells and helping cells get rid of waste products?
Blood vessels in the in the circulatory/cardiovascular system to carry all of these things around the body
- Blood picks up oxygen in the lungs and nutrient molecules (from food) from the intestines and delivers them to needy cells
- At the same time, blood collects carbon dioxide and wastes from the cells for excretion (in lungs or kidneys)
Name 5 sense organs?
eyes, ears, nose, mouth, skin
what are the main functions of sense organs?
send info abt ur environment to your nervous system
Define stimulus and response
- Any change or signal in the environment that can make an organism react in some way is called a stimulus.
- A response is an action or change in behavior that occurs as a result of stimulus
what body system is in charge of controlling/directing responses?
Directed by ur nervous system
Can involve other body systems as well
what are glands?
Glands: Organs of the endocrine system that produce and release chemicals called hormones through tiny tubes called ducts, or directly into the bloodstream
what are hormones?
Hormones: chemicals produced by an endocrine gland that are carried throughout the body by the circulatory system and affect many body processes
what is the job of insulin?
Insulin: Works with the digestive system and circulatory system to regulate amount of sugar in blood
what is the job of ADH?
ADH (Antidiuretic Hormone): works with the excretory system and circulatory system to regulate the amount of water in the body by controlling hoe much water the kidneys absorb
