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?

<p>To control metabolic rate, heart rate, and temperature (B)</p> Signup and view all the answers

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

<p>Decreased blood glucose concentration (A)</p> Signup and view all the answers

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

<p>To produce oestrogen involved in the menstrual cycle and female characteristics (B)</p> Signup and view all the answers

What is the primary purpose of homeostasis in the body?

<p>To maintain optimal conditions for enzyme action (C)</p> Signup and view all the answers

What is the main function of the retina?

<p>To sense light and convert it into an image (B)</p> Signup and view all the answers

What type of control systems are involved in homeostasis?

<p>Both hormonal and nervous control systems (A)</p> Signup and view all the answers

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

<p>To convert stimuli into electrical impulses (C)</p> Signup and view all the answers

What is the main function of the medulla?

<p>To control unconscious functions such as breathing and heart rate (B)</p> Signup and view all the answers

What is myopia?

<p>A condition where the eyeball is elongated (C)</p> Signup and view all the answers

What happens at a synapse between neurons?

<p>A chemical diffuses across the gap, stimulating a new impulse (A)</p> Signup and view all the answers

What is the purpose of the reflex arc?

<p>To allow rapid responses to stimuli without conscious thought (A)</p> Signup and view all the answers

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

<p>To reduce the distance between the lens and retina (C)</p> Signup and view all the answers

What is the role of effectors in the nervous system?

<p>To carry out responses to stimuli (B)</p> Signup and view all the answers

What is the normal body temperature of a human?

<p>37.5 degrees (B)</p> Signup and view all the answers

What is the main function of the sclera?

<p>To support the structure of the eye and prevent damage (D)</p> Signup and view all the answers

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