Science Review - How does the human body work?

The heart, brain and skin are examples of:

• bones

• organs

• muscles

Answer explanation

"The bigger parts os our body are called ORGANS. Some organs are on the outside, such as eyes and ears. Others are on the inside and cannot be seen, such as the brain and the heart.

Different orgns have different jobs or fnctions".

(Phenomenal Science, SB, page 15)

There are 206 bones in an adult's body.

• True

• False

An adult's body has more bones than a children's body.

• True

• False

Answer explanation

"A baby's body has about 300 bones at birth. These eventually fuse (grow together) to form the 206 bones that adults have. Some of a baby's bones are made entirely of a special material called cartilage. Other bones in a baby are partly made of cartilage. This cartilage is soft and flexible. During childhood, as you are growing, the cartilage grows and is slowly replaced by bone, with help from calcium.

By the time you are about 25, this process will be complete. After this happens, there can be no more growth — the bones are as big as they will ever be. All of these bones make up a skeleton that is both very strong and very light".

(https://kidshealth.org/en/kids/bones.html#:~:text=A%20baby's%20body%20has%20about,are%20partly%20made%20of%20cartilage.)

Our skeleton needs help from the tendons and _______ to move

• muscles

• nose

• mouth

Answer explanation

"In order for us to move, we need the help of MUSCLES. Tendons connect the muscles in our body to our skeleton".

(Phenomenal Science, SB, Page 16)

What is "C" pointing to and what does it protect?

• The skull and it protects the brain.

• The spine and it protects the heart.

• The spine and it protects the spinal cord.

Answer explanation

"Bones, discs, ligaments and muscles all work to protect the spinal cord. The spine is made of 33 bones called vertebrae, which have holes (spinal canals) through which the spinal cord passes".

(https://www.thepaintreatmentcenter.com/spinal-cord-protected/)

What is letter "A" pointing to?

• ribs

• skull

• femur

Answer explanation

Skull is the set of bones that form your head.

The bone in letter "E" is called...

• skull

• femur

• ribs

Answer explanation

The femur is the longest, heaviest, and strongest bone in the human body. It is a part of the leg.

This bone is called...

• ribs

• skull

• femur

Answer explanation

"The ribs are a set of bones that course from your spinal column, around your body, and attach to your sternum, or breastbone. These bones serve to protect the contents of your thoracic cavity. They also serve as an attachment point for many muscles and are active during respiration".

(https://www.verywellhealth.com/ribs-anatomy-5090169#:~:text=The%20ribs%20are%20a%20set,and%20are%20active%20during%20respiration.)

Why do we need a skeleton? Check the WRONG answer

• To protect vital organs.

• To shape our body.

• To make us look like jelly.

Answer explanation

"Our skeleton helps us to stand up straight and gives our body its shape. It also protects the organs inside us; for example, the cranium ofthe skull protects the brain".

(Phenomenal Science, SB, page 16)

In this picture we can see a body part. Which of our five senses is this related to?

• touching

• smelling

• hearing