How do we see?
What is the lens?
The lens helps the eye to focus the light.
What does the pinna do?
The pinna captures sound in the form of vibrations from the air.
What senses do we use to detect smells and flavors?
We use our sense of smell and taste.
What is our organ of touch? Is it a big or small organ?
The skin is our organ of touch and the largest organ in our body.
What are the changes to our external environment called?
Changes to our external environment are called stimuli.
What is the pupil?
The pupil is a hole where the light enters the eye.
What happens in the ear canal?
What do we use to taste different flavours?
We taste different flavours with our tongue using small receptors called taste buds.
What do the touch receptors do?
Touch receptors are the part of the skin that detect information about the environment.
What does the peripheral nervous system consist of?
The peripheral nervous system consists of nerves that extend throughout the body. It connects our central nervous system to our sense organs, our muscles and our internal organs.
What is the iris?
The iris controls the amount of light that enters the pupil.
Where do the vibrations reach? What bones do they make vibrate?
The vibrations reach the eardrum, making eardrum vibrate. This also makes the three small bones vibrate too.
What are the five different flavours that we can taste?
The five flavours we can taste are sweet, salty, sour, bitter and umami.
The nerves tell us how things feel. They get this information from the touch receptors.
What controls our involuntary movements?
The spinal cord controls our involuntary movements.
The retina captures the light and produces the image.
When the three small bones vibrate, what do they make vibrate? Then what happens?
The three small bones vibrate and make the cochlea vibrate. The cochlea transforms the vibrations into signals?
What do we use to detect smells?
We detect smells with our nose through scent receptors in the olfactory epithelium.
What are the skin's two main layers?
The skins two main layers are the epidermis and the dermis. The epidermis is the outside layer of our skin, that you can see and protects the body. The dermis is the layer that contains nerve endings and blood vessels.
Draw a diagram of the peripheral nervous system. What does a nerve consist of? What does it connect in the body? What are the two different types of nerves and what do they do?
Sensory nerves: sensory nerves receive messages from receptors in the sense organs and send the messages to the central nervous system.
Motor nervessend orders from the central nervous system to our organs
A diagram of nerves, including the axon, the dentrites, and the body.What is the optic nerve?
The optic nerve carries impulses to the brain to create an image.
Where do the signals from the cochlea travel? What happens next?
The signals from the cochlea travel along the auditory nerve and to the brain. The brain tells us that we are hearing a sound and what that sound is.
What are the four different parts of the nose that help us smell? Draw and label them on the whiteboard.
The olfactory nerve, the olfactory epithelium, the nasal cavity, and nostril.
Draw a diagram of the skin on the white board, including all of the different parts and labeling them.
It should contain the touch receptors, pore, hair, nerves, and the three layers of the skin, the epidermis, the dermis, and the hypodermis.
Draw a diagram of the central nervous system. What does each part do?
Your diagram should include: the spinal cord, the brain, the cerebrum, the cerebellum, and the brainstem.