Brain and Nervous System

The video explores the nervous system, detailing how the brain communicates with the body. It explains the roles of neurons, nerve impulses, and the division between the central and peripheral nervous systems. The video also covers sensory organs and how they detect stimuli, enabling responses and sensations. Key concepts include the structure and function of neurons, the brain's control over voluntary and involuntary actions, and the sensory receptors in the eyes, ears, tongue, nose, and skin.

What is the primary function of the nervous system?

• To produce hormones

• To digest food

• To communicate with other body parts

• To circulate blood

Which part of the neuron carries messages away from the cell body?

• Nucleus

• Dendrites

• Receptors

• Axon

What type of neurons are responsible for gathering information from the environment?

• Motor neurons

• Sensory neurons

• Interneurons

• Axons

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

• Medulla

• Cerebrum

• Spinal cord

• Cerebellum

What is the role of the cerebellum?

• Control involuntary actions

• Regulate emotions

• Maintain balance and coordination

• Process visual information

Which system controls involuntary actions like heart rate?

• Somatic nervous system

• Autonomic nervous system

• Peripheral nervous system

• Central nervous system

What is a reflex action?

• A conscious decision

• A voluntary response

• A slow reaction

• An automatic response to a stimulus

Which sensory organ is responsible for detecting light?

• Skin

• Ear

• Nose

• Eye

What type of photoreceptors are responsible for color vision?

• Rods

• Papillae

• Cones

• Olfactory cells

How does the brain interpret sound?

• Through the optic nerve

• By converting vibrations into electrical impulses

• Through taste buds

• By detecting light waves