18 Questions
What is the primary function of vasodilation in thermoregulation?
To bring more blood to the skin's surface for increased cooling
What is the role of the pituitary gland in the endocrine system?
To act as the master gland
What is the response of the pancreas when blood glucose concentration is too high?
To produce insulin
What is the primary function of the thyroid gland?
To control metabolic rate, heart rate, and temperature
What is the result of excess glucose being converted to glycogen in the liver?
Decreased blood glucose concentration
What is the function of the ovaries in the endocrine system?
To produce oestrogen involved in the menstrual cycle and female characteristics
What is the primary purpose of homeostasis in the body?
To maintain optimal conditions for enzyme action
What is the main function of the retina?
To sense light and convert it into an image
What type of control systems are involved in homeostasis?
Both hormonal and nervous control systems
What is the function of receptor cells in the nervous system?
To convert stimuli into electrical impulses
What is the main function of the medulla?
To control unconscious functions such as breathing and heart rate
What is myopia?
A condition where the eyeball is elongated
What happens at a synapse between neurons?
A chemical diffuses across the gap, stimulating a new impulse
What is the purpose of the reflex arc?
To allow rapid responses to stimuli without conscious thought
What is the purpose of the concave lens in correcting myopia?
To reduce the distance between the lens and retina
What is the role of effectors in the nervous system?
To carry out responses to stimuli
What is the normal body temperature of a human?
37.5 degrees
What is the main function of the sclera?
To support the structure of the eye and prevent damage
Test your knowledge of homeostasis, the process of maintaining optimal conditions for enzyme action in the body. Learn about the importance of homeostasis, its regulation of blood glucose concentration, body temperature, and water levels, and its involvement of hormonal and nervous control systems.
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