Homeostasis and Nervous system
Everything about homeostasis and the nervous system
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Time limit: 7 minutes
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Question 1
What is homeostasis?
Explanation
Homeostasis refers to the processes that maintain a stable internal environment in the body despite external changes.
Question 2
Which part of the nervous system controls automatic functions such as heartbeat and digestion?
Explanation
The Autonomic Nervous System regulates involuntary physiological functions, including heartbeat and digestion.
Question 3
What is the role of the hypothalamus in homeostasis?
Explanation
The hypothalamus plays a crucial role in maintaining homeostasis by regulating various hormonal levels and controlling body temperature.
Question 4
What is the primary function of neurotransmitters in the nervous system?
Explanation
Neurotransmitters are chemicals that transmit signals across synapses from one neuron to another, facilitating communication.
Question 5
Which physiological response is triggered when the body temperature rises?
Explanation
Vasodilation is the widening of blood vessels which helps to release heat from the body when temperature rises.
Question 6
Which nervous system structure is primarily involved in reflex actions?
Explanation
The spinal cord is crucial for processing reflex actions that do not require direct involvement from the brain.
Question 7
Which mechanism is NOT a part of maintaining homeostasis?
Explanation
Positive feedback amplifies a process, while homeostasis typically relies on negative feedback to maintain stability.
Question 8
Which of the following is a function of the sympathetic nervous system?
Explanation
The sympathetic nervous system prepares the body for 'fight or flight' responses by increasing heart rate and blood flow.
Question 9
In homeostasis, if blood sugar levels rise, which hormone is released to lower them?
Explanation
Insulin is the hormone responsible for lowering blood sugar levels by facilitating the uptake of glucose by cells.
Question 10
What kind of feedback mechanism is involved in childbirth?
Explanation
Childbirth involves positive feedback, where the release of hormones increases contractions, leading to more hormone release.
Question 11
What role does the parasympathetic nervous system play in the body?
Explanation
The parasympathetic nervous system supports 'rest and digest' functions, conserving energy and promoting relaxation.
Question 12
Which term describes the body's process of adjusting to stressors?
Explanation
Adaptation refers to the changes the body undergoes to maintain stability in the face of stressors.
Question 13
Which neurotransmitter is primarily involved in mood regulation?
Explanation
Dopamine is crucial for regulating mood, motivation, and reward processes in the brain.
Question 14
How does the body primarily regulate blood pressure?
Explanation
The body regulates blood pressure primarily through the release of hormones that affect blood vessel behavior and fluid volume.
Question 15
What is the primary function of the sensory nervous system?
Explanation
The sensory nervous system is responsible for receiving and processing sensory input from the environment.