Skeletal system
Ribs
Protect the heart and lungs.
Double point
What are hormones?
Hormones are chemical messengers produced by endocrine glands that travel through the bloodstream to target cells, causing specific changes.
Describe this system
Helps us breath in air and to breath out carbon dioxide.
What is the main organ for this system?
Heart
Immune System
Defends the body against pathogens
Skull
Protects the brain.
How does the endocrine system differ from the nervous system?
The nervous system uses fast nerve impulses for immediate responses, whereas the endocrine system uses slower-acting hormones for long-lasting effects.
Where does gas exchange take place?
It occurs in the alveoli, which are tiny, thin-walled sacs at the end of bronchioles in the lungs
what does the cardiovascular system consist of?
the heart, blood vessels (arteries, veins, and capillaries), and blood.
Integumentary System
The skin, hair, and nails that form a protective covering on the outside of the body
How many bones are in the adult human body?
There are 206 bones.
What is the "master gland"?
The pituitary gland is often called the master gland because it produces hormones that control many other endocrine glands.
What is the medical term for the windpipe?
The trachea.
A network of tubes categorized as arteries (carry blood away from the heart), veins (return blood to the heart), and capillaries (facilitate exchange of materials).
Digestive System
Breaks down food into nutrients the body can absorb
What are the primary functions of the skeletal system?
The skeletal system provides shape and support, protects internal organs (like the skull protecting the brain), enables movement, produces blood cells, and stores minerals
What does the pancreas do?
The pancreas regulates blood sugar levels by releasing insulin (which lowers blood sugar) and glucagon (which raises it).
What is the difference between external and internal respiration?
External respiration is the exchange of gases between the air and blood in the lungs; internal respiration is the exchange of gases between the blood and tissue cells.
The fluid medium that transports oxygen and nutrients to tissues and carries waste to organs for elimination
Muscular System.
Responsible for movement and flexibility.
What is the difference between bone and cartilage?
Bones are rigid structures forming the skeleton, while cartilage is a flexible connective tissue that cushions joints and prevents bones from rubbing together.
What is the endocrine system?
The endocrine system is a network of glands that release chemicals called hormones directly into the bloodstream to regulate body functions like growth, metabolism, and mood.
What is the role of the diaphragm in breathing?
The diaphragm contracts and moves downward during inhalation to pull air into the lungs, and relaxes during exhalation to push air out.
What are the signs of a heart attack or stroke?
Excretory/Urinary System.
Removes waste products and regulates body fluid levels.