The diagrams below show the human brain and human kidney - NSC Life Sciences - Question 3 - 2021 - Paper 1
Question 3
The diagrams below show the human brain and human kidney.
3.1.1 Identify part A.
3.1.2 State ONE function of part C.
3.1.3 A person sustained a head injury in a c... show full transcript
Worked Solution & Example Answer:The diagrams below show the human brain and human kidney - NSC Life Sciences - Question 3 - 2021 - Paper 1
Step 1
Identify part A.
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Answer
Part A is identified as the Cerebellum.
Step 2
State ONE function of part C.
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Answer
One function of part C is to allow for communication between the two hemispheres of the brain.
Step 3
A person sustained a head injury in a car accident and lost his memory. Write down the LETTER and NAME of the brain that was affected.
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Answer
The affected part of the brain is D, which is the Cerebrum.
Step 4
Name the hormone secreted by gland E in an emergency situation.
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The hormone secreted by gland E is Adrenaline.
Step 5
Explain how an increase in breathing rate and heart rate results in increased energy production in skeletal muscles.
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An increase in breathing rate and heart rate enhances the oxygen supply to the skeletal muscles. More oxygen allows for increased aerobic respiration, leading to higher ATP production, which provides the energy needed for muscle contraction.
Step 6
Describe how part B is involved in carbon dioxide homeostasis.
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Part B, which is the medulla oblongata, is responsible for controlling the breathing rate. It detects increased levels of carbon dioxide in the blood and stimulates the body to increase the rate of breathing, facilitating the exhalation of carbon dioxide and thus maintaining homeostasis.
