Excretory system
This organ filters your blood and removes waste like urea.
What are the kidneys?
The main purpose of the reproductive system.
What is to produce offspring?
Chemical messengers that travel through the bloodstream and control body functions.
What are hormones?
The two main structures of the central nervous system.
What are the brain and spinal cord?
A tiny organism too small to see without a microscope.
What is a microorganism?
This liquid waste is produced when the kidneys filter your blood.
What is urine?
The two types of human reproductive cells.
What are sperm and egg cells?
The gland in the brain known as the “master gland.”
What is the pituitary gland?
Cells that send electrical signals throughout the body.
What are neurons?
A lever, pulley, or inclined plane is an example of this.
What is a simple machine?
This yellow pigment gives urine its colour.
What is urochrome?
The organs in females that release eggs.
What are the ovaries?
The hormone that helps regulate blood sugar levels.
What is insulin?
A fast, automatic response that does not require conscious thought.
What is a reflex?
A term describing an organism made of many cells.
What is multicellular?
These tubes carry urine from the kidneys to the bladder.
What are the ureters?
When a sperm cell joins with an egg cell.
What is fertilization?
The body system that communicates using chemicals instead of electrical signals.
What is the endocrine system?
The part of the brain responsible for thinking, memory, and learning.
What is the cerebrum?
Scientists do this to organize and study organisms based on shared traits.
What is classification?
These two body systems work together when blood is delivered to the kidneys to be cleaned.
What are the circulatory and excretory systems?
Physical and hormonal changes during adolescence that prepare the body for reproduction.
What is puberty?
The two body systems that interact when the brain signals glands to release hormones.
What are the nervous and endocrine systems?
The two systems that work together when the brain instructs glands to release hormones.
What are the nervous and endocrine systems?
What you call a device that uses two or more simple machines working together.
What is a compound machine?