Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
External Organs: These are the body parts located on the outside that we can see and touch, such as hands, legs, and the sense organs.
Internal Organs: These are the organs located inside the body, such as the brain, heart, lungs, stomach, and kidneys. They are protected by the skeletal system.
The Brain: It is the 'Control Center' of the body. It helps us think, learn, and remember. It requires a constant supply of oxygen () to work efficiently.
The Heart: A muscular organ that pumps blood throughout the body. The average human heart beats approximately times per minute.
The Lungs: We have a pair of lungs that help us breathe. They take in oxygen () and release carbon dioxide ().
The Stomach: A J-shaped bag that helps in the digestion of food by breaking it down into simpler forms.
The Kidneys: A pair of bean-shaped organs that filter waste products from the blood to form urine.
Sense Organs: These include the eyes (sight), ears (hearing), nose (smell), tongue (taste), and skin (touch). The skin is the largest organ of the human body.
📐Formulae
💡Examples
Problem 1:
Which organ is responsible for pumping blood to all parts of the body?
Solution:
The Heart
Explanation:
The heart acts as a pump that circulates blood, carrying nutrients and to different cells.
Problem 2:
Identify whether the following are Internal or External organs: (a) Lungs, (b) Eyes.
Solution:
(a) Internal, (b) External
Explanation:
Lungs are located inside the chest cavity and cannot be seen from the outside, while eyes are visible on the face.
Problem 3:
What gas do the lungs remove from our body during exhalation?
Solution:
(Carbon Dioxide)
Explanation:
During the process of respiration, the lungs exchange gases, taking in and expelling as a waste product.