NERVOUS SYTEM

1.     Which of the following bone protects the brain? 

• backbone

• pelvic bone

• ribcage

• skull 

Answer explanation

Skull a bone protective cavity for the brain and sensory structures in humans and other vertebrates.

1.     Which of the following bones is part of the human arm? 

• femur

• humerus

• tibia

• radius 

2.     What is the largest bone in the human body? 

• humerus

• femur

• tibia

• skull 

3.     Which bone is commonly known as the collarbone? 

• scapula

• clavicle

• sternum

• humerus 

   What is the tough cord that connects the skeletal muscles to the bones?

• cartilage  

• muscles

• skin 

• tendon 

   

  Which of the following gives color to the skin, hair, and eyes? 

• keratin

• melanin

•  sebum

• sweat 

What organ system consists of the skin, hair, and nails? 

• circulatory system

• integumentary system           

• nervous system  

•   respiratory system 

   

How does the skin regulate body temperature?

• by retaining water

• by producing vitamin D 

• by increasing sweat production

• by regulating fat content in the skin 

The walls of the arteries are thick. Why is this important?

• So that they will not be infected

• So that they can carry more blood

• So that they can supply blood to all parts of the body

•     So that they will not break easily due to the pressure of blood coming from the heart

When does a blood become oxygenated?              

• After it has traveled around the body 

• After it has passed the lungs

• Before it goes to the lungs

•    Before it goes to the right ventricle