Brain

What is the main control center of the human body?

• 1. Heart

• 1. Brain

• 1. Lungs

• 1. Liver

Where is the spinal cord located?

• 1. In the skull

• 1. In the ribcage

• 1. In the vertebral column

• 1. In the abdomen

What percentage of the brain is approximately made up of water?

• 50-60%

• 65-70%

• 75-80%

• 90-95%

What is the approximate weight of the human brain?

• 500 g

• 1-1.2 kg

• 1.3-1.5 kg

• 2-2.5 kg

Which part of the brain is responsible for thinking, memory, and voluntary movements?

• Cerebrum

• Cerebellum

• Brainstem

• Spinal cord

Which part of the brain is primarily responsible for balance and coordination?

• Cerebrum

• Cerebellum

• Brainstem

• Hippocampus

What is a reflex?

• A conscious decision

• An involuntary response to a stimulus

• A slow movement

• A learned habit

Which organ supplies oxygen to the brain?

• Lungs

• Heart and blood vessels

• Stomach

• Liver

What is the basic unit of the nervous system?

• Neuron

• Muscle cell

• Bone cell

• Skin cell

Which of the following is an example of a reflex action?

• Reading a book

• Blinking when something approaches the eyes

• Solving a math problem

• Playing a musical instrument