Identify part A - NSC Life Sciences - Question 3 - 2022 - Paper 1
Question 3
Identify part A.
Explain why a person may die if part C is damaged.
Part B is damaged in a person's lower back.
(a) Identify part B.
(b) Explain why the person w... show full transcript
Worked Solution & Example Answer:Identify part A - NSC Life Sciences - Question 3 - 2022 - 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 corpus callosum. It is the structure in the brain that connects the left and right cerebral hemispheres.
Step 2
Explain why a person may die if part C is damaged.
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
If part C, known as the medulla oblongata, is damaged, it can disrupt vital body functions such as heartbeat and breathing, which are controlled by this area. Without these essential functions, the person could suffer fatal consequences.
Step 3
Part B is damaged in a person's lower back.
(a) Identify part B.
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
Part B is the spinal cord. It transmits messages between the brain and the body.
Step 4
(b) Explain why the person will have no control of the skeletal muscles of the legs.
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
When the spinal cord is damaged, the impulses from the brain cannot reach the skeletal muscles of the legs. This interrupts the communication necessary for voluntary movement, resulting in a loss of control over these muscles.
