Human Biology Overview
The human body is an organised system of organ systems that work together to maintain life. Year 7 students learn the major organ systems and how they interact to keep the body functioning.
What You Need to Know
Key Concept Diagram
The human body has 11 major organ systems: skeletal, muscular, circulatory, respiratory, digestive, nervous, endocrine, reproductive, lymphatic, urinary, and integumentary (skin)
Homeostasis is the process by which the body maintains a stable internal environment (e.g. temperature, blood sugar)
Organs are made of tissues; tissues are made of cells — all working together for a common function
The circulatory system transports oxygen, nutrients, and waste products around the body via blood and blood vessels
Key Vocabulary
Organ system
A group of organs working together to perform a major body function
Homeostasis
The maintenance of a stable internal environment in the body, e.g. constant temperature and blood pH
Circulatory system
The organ system that transports blood, oxygen, nutrients, and waste products around the body
Respiration
The process by which cells release energy from glucose, using oxygen and producing carbon dioxide
Knowledge Check
Select the correct answer for each question. Click "Check Answer" to see if you are right.
Question 1
What is homeostasis?
Question 2
Which organ system transports oxygen and nutrients throughout the body?
Question 3
In what order does the structure of the body go from smallest to largest?
Key Concepts Summary
- ●The human body has 11 major organ systems: skeletal, muscular, circulatory, respiratory, digestive, nervous, endocrine, reproductive, lymphatic, urinary, and integumentary (skin)
- ●Homeostasis is the process by which the body maintains a stable internal environment (e.g. temperature, blood sugar)
- ●Organs are made of tissues; tissues are made of cells — all working together for a common function
- ●The circulatory system transports oxygen, nutrients, and waste products around the body via blood and blood vessels