What is the main function of the nervous system?

• To digest food

• To control and coordinate body activities

• To circulate blood

• To produce hormones

Answer explanation

The main function of the nervous system is to control and coordinate body activities, allowing for communication between different parts of the body and responding to internal and external stimuli.

What is the basic unit of the nervous system?

• Cell

• Neuron

• Tissue

• Organ

Answer explanation

The basic unit of the nervous system is the neuron. Neurons are specialized cells that transmit information throughout the body, making them essential for all nervous system functions.

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

• Cerebrum

• Cerebellum

• Brainstem

• Thalamus

Answer explanation

The cerebellum is the part of the brain that coordinates balance and fine motor control. It processes sensory information and helps maintain posture, making it essential for smooth and balanced movements.

What is the function of synapses in the nervous system?

• To store energy

• To transmit signals between neurons

• To produce blood cells

• To digest nutrients

Answer explanation

Synapses are crucial for the nervous system as they transmit signals between neurons, allowing communication and coordination of responses throughout the body. This function is essential for all neural activities.

Which part of the brain is the largest and responsible for voluntary activities?

• Brainstem

• Cerebellum

• Cerebrum

• Medulla

Answer explanation

The cerebrum is the largest part of the brain and is responsible for voluntary activities, including movement, reasoning, and emotions. It plays a key role in processing sensory information and higher cognitive functions.

What should you always wear to protect your eyes during a lab dissection?

• Sunglasses

• Safety goggles

• Reading glasses

• Contact lenses

Answer explanation

Safety goggles are essential for eye protection during lab dissections as they shield against splashes and debris. Unlike sunglasses or reading glasses, they provide a secure fit and full coverage, ensuring your eyes remain safe.

What is the role of the spinal cord in the nervous system?

• To digest food

• To connect the brain to the rest of the body

• To pump blood

• To produce hormones

Answer explanation

The spinal cord serves as a critical pathway, connecting the brain to the rest of the body. It transmits signals for movement and sensation, making it essential for communication within the nervous system.

What is the primary function of neurons?

• To store fat

• To transmit electrical signals

• To produce enzymes

• To absorb nutrients

Answer explanation

The primary function of neurons is to transmit electrical signals throughout the body, facilitating communication between different parts of the nervous system. This is essential for processing and responding to information.

Which part of the brain controls involuntary actions like breathing and heartbeat?

• Cerebrum

• Cerebellum

• Brainstem

• Hippocampus

Answer explanation

The brainstem controls involuntary actions such as breathing and heartbeat. It regulates essential functions that are automatic and do not require conscious thought, unlike the cerebrum or cerebellum.

What is the purpose of wearing gloves during a dissection?

• To keep hands warm

• To protect hands from chemicals and biological materials

• To improve grip

• To look professional

Answer explanation

Wearing gloves during dissection is essential to protect hands from chemicals and biological materials, ensuring safety and hygiene while handling specimens.