Sensory Receptors
What types of stimuli do photoreceptors sense?
Photoreceptors sense light and color.
What are the differences between sensory neurons and motor neurons?
Sensory neurons send information from the sensory organs to the brain, motor neurons send commands from the brain to muscle tissues.
You are a doctor and your patient tells you that, "I have been feeling very emotional recently. I also become very violent when something small triggers me."
Which part of their brain is damaged?
Frontal lobe is damaged.
The set of actions taken by an organism in response to stimuli is called...
Behavior.
What is homeostasis?
The process by which the inside of the body maintains stable conditions.
In what organs could you find chemical receptors?
The nose and the tongue.
What are the similarities between sensory neurons and motor neurons?
Both types of neurons are responsible for sending information.
You are a doctor and your patient tells you, "When I was working this morning, I suddenly lost the ability to speak. I know what I want to say, but I cannot express it."
Which part of their brain is damaged?
Temporal lobe.
List two types of behavior in animals and write an example for each type.
Innate behavior and learned behavior. For example, swallowing is innate, while speaking is learned.
What type of feedback is this: You are eating dinner. The more you eat, the more you lose your appetite and eventually become full.
Negative feedback.
What receptor type detects pressure, movement and tension?
Mechanoreceptors detect pressure, movement and tension.
Why do neurons have different processing speeds?
Some stimuli are more dangerous and require more immediate responses.
Your patient tells you that on average, he trips over 3 times on a flat road. You examined his muscular and skeletal system and found no problems. What is a likely cause for his symptoms?
The patient has a damaged cerebellum.
How does an infant remember the smell of its mother?
It has stored memories gained from sensory stimuli.
Identify the type of feedback: The more food you eat, the more your stomach and intestines move.
Positive feedback.
What are the different types of sensory receptors present within your skin?
Thermal receptor and mechanoreceptor.
What happens if a person severely damaged one of their motor neurons? Explain your answer fully to score points.
A damaged motor neuron means that the command from the brain cannot be sent to the muscles. Therefore, the person may be paralyzed in that region.
You are a doctor and your patient tells you, "I know I have a husband and a cat, but I cannot remember how they look. However, I can recognize their voice and meow. "
Which part of their brain is damaged?
Temporal lobe
What can you say about the reaction speed for animals encountering an event the first time vs. an experienced animal? Use the appropriate terminologies you learned in class to answer the question.
An animal encountering an event the first time will take longer to react to the event compared to the experienced animal because the experienced animal has stored memory about how to react.
You pulled an all-nighter to study for a midterm.
How does your body maintain homeostasis?
To maintain homeostasis, your body will try really hard to replenish sleep. Maybe you'll sleep more the following night.
What do sensory receptors do with the information they gather?
The information is sent to the brain through sensory neurons.
If the motor neuron in a person is damaged, can the person still gather sensory information?
Yes! The neurons responsible for sending information to and from the brain are different from sensory neurons, which gather sensory information.
The parietal lobe of a patient is damaged. Predict the symptoms this patient will suffer from.
This patient will lose all senses.
Why might you be able to get a good grade on this quiz? Use behavior and memory in your response.
Answers may vary.
Behavior: You listened and took notes during class, or studied hard before the quiz. You apply your knowledge to the quiz.
Memory: You remember the facts and ideas learned in class and when you took the quiz, you could access those memories.
There is a blood clot in a person's artery and not enough blood is getting to his legs.
How does this person's body maintain homeostasis?
The person's heart will pump faster to transport blood to his legs. Thus, blood pressure increases.