Nervous System Quiz (Amoeba sisters video)

What components make up the Central Nervous System (CNS)?

• Brain and spinal cord

• Heart and lungs

• Muscles and nerves

• Brain and stomach

Answer explanation

The Central Nervous System (CNS) is composed of the brain and spinal cord, which work together to process information and coordinate responses. The other options do not represent components of the CNS.

What is one main function of the brain in the CNS?

• Pumps blood

• Initiates digestion

• Processes sensory information

• Transmits oxygen

Answer explanation

The brain processes sensory information, allowing us to perceive and respond to our environment. This function is crucial for interpreting signals from our senses, unlike the other options which are functions of different organs.

What role does the spinal cord play in the CNS?

• Regulates temperature

• Carries signals between the brain and body

• Stores fat

• Produces hormones

Answer explanation

The spinal cord is a crucial part of the CNS that carries signals between the brain and body, facilitating communication and coordination of movements and responses. It does not regulate temperature, store fat, or produce hormones.

What is the function of the PNS?

• Processes emotions

• Carries messages to limbs and organs

• Regulates blood sugar

• Controls the liver

Answer explanation

The PNS, or peripheral nervous system, is responsible for carrying messages to limbs and organs, facilitating communication between the brain and the rest of the body. This makes 'Carries messages to limbs and organs' the correct choice.

What does the Somatic Nervous System control?

• Voluntary muscle movements

• Breathing rate

• Hormone release

• Body temperature

Answer explanation

The Somatic Nervous System controls voluntary muscle movements, allowing us to perform actions like walking and talking. It does not regulate breathing, hormone release, or body temperature, which are managed by other systems.

What does the Autonomic Nervous System regulate?

• Voluntary arm movement

• Heartbeat and digestion

• Memory recall

• Reflexes

Answer explanation

The Autonomic Nervous System regulates involuntary functions such as heartbeat and digestion, making 'Heartbeat and digestion' the correct choice. It does not control voluntary movements, memory recall, or reflexes.

What is the Sympathetic Division of the Autonomic Nervous System responsible for?

• Sympathetic Nervous System

• Autonomic Nervous System

• Initiates 'fight or flight' response

• Reduces reflex actions

Answer explanation

The Sympathetic Division of the Autonomic Nervous System is responsible for initiating the 'fight or flight' response, preparing the body to react to stress or danger.

What does the Parasympathetic Division do?

• Sympathetic Nervous System

• Promotes 'rest and digest' activities

• Triggers 'fight or flight' response

• Increases alertness

Answer explanation

The Parasympathetic Division promotes 'rest and digest' activities, which help conserve energy and facilitate bodily functions during calm states, contrasting with the Sympathetic Nervous System that triggers 'fight or flight' responses.

What are neurons?

• Specialized cells that transmit signals

• Found only in the muscle tissues

• Control voluntary actions

• Regulate emotions

Answer explanation

Neurons are specialized cells that transmit signals throughout the body, enabling communication within the nervous system. They are not limited to muscle tissues, nor do they solely control voluntary actions or regulate emotions.

What is a synapse?

• Gap between neurons where neurotransmitters carry signals

• The largest part of the brain

• Type of neuron

• A receptor on muscle cells

Answer explanation

A synapse is the gap between neurons where neurotransmitters are released to carry signals from one neuron to another, facilitating communication in the nervous system.