Sensory Receptors and Reflex Actions

The video explores sensory processing, detailing how our senses gather information and transmit it to the brain via the nervous system. It explains the roles of the peripheral and central nervous systems, various sensory receptors, and how they detect different stimuli. The video also covers reflex actions and learned responses, illustrating how our body reacts to stimuli both automatically and through learned behavior.

What are the five senses mentioned that help in a nature walk?

• Sight, smell, taste, touch, and hearing

• Sight, smell, taste, touch, and balance

• Sight, smell, taste, touch, and intuition

• Sight, smell, taste, touch, and movement

Which part of the nervous system connects the brain with the physical environment?

• Central nervous system

• Peripheral nervous system

• Sympathetic nervous system

• Autonomic nervous system

What is the role of sensory receptors in the body?

• To store energy

• To produce hormones

• To transmit electrical signals

• To pick up signals or stimuli from the environment

Which type of sensory receptor is responsible for detecting pain?

• Photo receptors

• Mechano receptors

• Thermo receptors

• No receptors

How do sound waves travel through the ear to be perceived by the brain?

• Through the outer ear to the optic nerve

• Through the ear canal to the eardrum, then to the inner ear

• Through the middle ear directly to the brain

• Through the outer ear directly to the brain

What happens when smell molecules dissolve into the mucus in the nose?

• They are stored for later use

• They are absorbed into the bloodstream

• They excite the old factory cells

• They are converted into taste signals

What is a natural reflex action?

• A conscious decision

• A quick motor response to a stimulus

• A slow response to pain

• A learned behavior

How are learned reflexes acquired?

• Through meditation

• By reading about them

• By repeated exposure and experience

• Through genetic inheritance

What is the role of the spinal cord in reflex actions?

• To store sensory information

• To control voluntary movements

• To process reflex actions before the brain perceives them

• To transmit signals to the muscles

What should you do the next time you step on something during a hike?

• Ignore it and keep walking

• Thank your specialized nerve receptors

• Stop hiking altogether

• Immediately call for help