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Homeostasis and Control Systems

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Questions and Answers

What is the primary function of vasodilation in thermoregulation?

To bring more blood to the skin's surface for increased cooling (correct)

To produce adrenaline for fight or flight responses

To generate heat

To reduce blood glucose concentration

What is the role of the pituitary gland in the endocrine system?

To produce testosterone

To act as the master gland (correct)

To regulate blood glucose concentration

To produce insulin

What is the response of the pancreas when blood glucose concentration is too high?

To produce insulin (correct)

To reduce the metabolic rate

To secrete adrenaline

To produce more glucose

What is the primary function of the thyroid gland?

To control metabolic rate, heart rate, and temperature Signup and view all the answers

What is the result of excess glucose being converted to glycogen in the liver?

Decreased blood glucose concentration Signup and view all the answers

What is the function of the ovaries in the endocrine system?

To produce oestrogen involved in the menstrual cycle and female characteristics Signup and view all the answers

What is the primary purpose of homeostasis in the body?

To maintain optimal conditions for enzyme action Signup and view all the answers

What is the main function of the retina?

To sense light and convert it into an image Signup and view all the answers

What type of control systems are involved in homeostasis?

Both hormonal and nervous control systems Signup and view all the answers

What is the function of receptor cells in the nervous system?

To convert stimuli into electrical impulses Signup and view all the answers

What is the main function of the medulla?

To control unconscious functions such as breathing and heart rate Signup and view all the answers

What is myopia?

A condition where the eyeball is elongated Signup and view all the answers

What happens at a synapse between neurons?

A chemical diffuses across the gap, stimulating a new impulse Signup and view all the answers

What is the purpose of the reflex arc?

To allow rapid responses to stimuli without conscious thought Signup and view all the answers

What is the purpose of the concave lens in correcting myopia?

To reduce the distance between the lens and retina Signup and view all the answers

What is the role of effectors in the nervous system?

To carry out responses to stimuli Signup and view all the answers

What is the normal body temperature of a human?

37.5 degrees Signup and view all the answers

What is the main function of the sclera?

To support the structure of the eye and prevent damage Signup and view all the answers