Senses in Action
This type of receptor is responsible for detecting odors by responding to molecules in the air.
What are chemoreceptors
These structures are responsible for making neurotransmitters and releasing them into the synapse
What are axon terminals
This part of the ear is responsible for converting sound vibrations into nerve impulses.
What is the cochlea
Spinal injuries can cause loss of sensation and paralysis (loss of ability to move) in the legs. Explain why this can happen.
Spinal injuries can disrupt the flow of information between the brain and the legs. When the spinal cord is damaged, sensory neurons can't transmit signals from the legs to the brain, and motor neurons can't send signals from the brain to the legs, leading to paralysis and loss of sensation.
Label this part of the neuron: the long, slender part that transmits electrical signals from the cell body to other neurons.
What is the axon
The reason your lips are more sensitive to touch than your forehead is due to more of these
What are touch receptive fields
These types of neurons carry sensory information from the body to the central nervous system.
What are sensory neurons
This structure of the ear funnels sound into the ear canal.
What is the outer ear/ auricle
Neurotransmission has both electric and chemical components. Explain why both are needed.
The electric component (action potentials) allows for rapid signal transmission along neurons, while the chemical component (neurotransmitters) allows for communication between neurons across synapses. Both are needed for efficient and fast communication in the nervous system.
Label the part of the neuron that receives chemical signals from other neurons.
What is the dendrite
This type of receptor is responsible for vision
What are photoreceptors
This type of neuron carries motor commands from the central nervous system to muscles and glands.
What are motor neurons
This part of the ear vibrates in response to sound waves and transmits them to the middle ear.
What is the eardrum
A person who is paralyzed can use an electronic device implanted in the brain to control robotic hands. How is that possible?
The device detects electrical signals from neurons in the brain, which normally control hand movement. The device translates these brain signals into commands that control robotic hands, bypassing the damaged spinal cord and allowing the person to move the robotic hands with their thoughts.
These chemicals are released from the axon terminal and travel across synapses to transmit signals to other neurons.
What are neurotransmitters
These photoreceptors are sensitive to light and are responsible for color vision.
What are cones
This structure in a neuron transmits the electrical signal away from the cell body to the axon terminals.
What is the axon
This part of the ear connects the middle ear to the throat and helps equalize pressure.
What is the eustachian tube
Name the three types of receptors
photoreceptors, mechanoreceptors, chemoreceptors
This is the gap between two neurons where neurotransmitters travel to relay signals.
What is the synapse
Mechanoreceptors are responsible for identifying what types of stimuli?
What are sounds waves and pressure?
This structure in the brain receives sensory input about odors detected in the nasal cavity.
What is the olfactory bulb
The part of the ear that helps with balance and spatial orientation, alongside hearing, is called the **semicircular canals**. Where are they located?
What is the **inner ear
You are asked to draw a flowchart that illustrates what happens when your hand touches something gooey and icky.
1. **Stimulus:** The gross thing you are touching.
2. **Mechanoreceptors (touch):** Detect the texture and gross feeling.
3. **Sensory Neurons:** Carry the signal from your skin to the spinal cord.
4. **Spinal Cord (Interneurons):** Relay the signal to the brain for processing.
5. **Brain Processes Stimuli:** Your brain realizes you are touching something unpleasant.
6. **Back to Spinal Cord (Interneurons):** Sends a command to pull your hand away.
7. **Motor Neurons:** Carry the motor signal to your hand.
8. **Move Muscles:** You pull your hand away from the icky stimulus.
If you were to draw the entire process of neurotransmission, label this part: The electrical signal traveling along the axon. (direction)
What is the dendrite to terminal