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 car... 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
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Part A is the Cerebellum.
Step 2
State ONE function of part C
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
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 part of the brain that was affected.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The affected part of the brain is D - the Cerebrum.
Step 4
Name the hormone secreted by gland E in an emergency situation.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
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.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
During an emergency, increased breathing rate allows more oxygen to be inhaled, which is then transported, along with glucose, to the skeletal muscles. This increase in oxygen enhances the rate of cellular respiration, leading to greater energy production.
Step 6
Describe how part B is involved in carbon dioxide homeostasis.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Part B, the medulla oblongata, is stimulated to send impulses to the heart and breathing muscles. This action increases the breathing rate and helps exhale more carbon dioxide, thus regulating carbon dioxide levels in the body.
