(a) Name the gland and the hormone secreted by it in scary situations in human beings. List any two responses shown by our body when this hormone is secreted into the blood.
OR
(b) In the given diagram (i) Name the parts labelled A, B, and C. (ii) Write the functions of A and C. (iii) Reflex arcs have evolved in animals ? Why ?
(a) Name the gland and the hormone secreted by it in scary situations in human beings. List any two responses shown by our body when this hormone is secreted into the blood.
OR
(b) In the given diagram (i) Name the parts labelled A, B, and C. (ii) Write the functions of A and C. (iii) Reflex arcs have evolved in animals ? Why ?
Official answer
The gland is the adrenal gland and the hormone secreted by it in scary situations in human beings is adrenaline. Two responses shown by our body when this hormone is secreted into the blood are: (i) Increased heart rate (ii) Increased blood pressure
Marking scheme
- 1.Adrenaline is a hormone secreted by the adrenal gland in response to stress or scary situations.
- 2.Increased heart rate
- 3.Increased blood pressure
Hint
Adrenaline is a hormone secreted by the adrenal gland in response to stress or scary situations.
Quick oral answer
Adrenaline is a hormone secreted by the adrenal gland in response to stress or scary situations. It prepares the body for 'fight or flight' by increasing heart rate and blood pressure.
Common mistakes
- 1.Confusing adrenaline with other hormones
- 2.Not understanding the role of adrenaline in the body
Analysis and explanation
Adrenaline is a hormone secreted by the adrenal gland in response to stress or scary situations. It prepares the body for 'fight or flight' by increasing heart rate and blood pressure.
Interesting facts
Adrenaline is also known as epinephrine.
Adrenaline is used as a medication to treat anaphylaxis, a severe allergic reaction.
Question details
Q29 of 39 questions
- Board
- CBSE
- Class
- Class 10
- Subject
- Science
- Year
- 2023
- Section
- Section Section C
- Marks
- 3
- Type
- Short Answer
- Chapter
- Chemical Reactions and Equations
- Topic
- Chemical Reactions and Equations
- Bloom's level
- Knowledge
- Syllabus topic
- Chemical Reactions and Equations
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Frequently asked questions
How many marks does this question carry in CBSE Class 10 Science 2023?
This question carries 3 marks in the CBSE Class 10 Science 2023 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Chemical Reactions and Equations" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Chemical Reactions and Equations" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2023 paper?
This is a Short Answer question from Section Section C in the CBSE Class 10 Science 2023 paper.