Question
Sinoatrial node [SA] or Pacemaker.
✓
Answer
SA node acts as pacemaker of heart because it has the power of generating a new wave of contraction and making the pace of contraction.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The immune system of a person is suppressed. In the ELISA test, he was found positive to a pathogen.
- Name the disease the patient is suffering from.
- Write the full name of the causative organism.
- Which cells of the body are affected by the pathogen.
Rearrange the names of tanks used in sewage treatment as per the flow of procedure.
- settling tank
- Grit Chamber
- aeration tanks
- primary sedimentation tank.
An infertile couple has agreed for a test tube baby programme. Describe the two principle procedures adopted for such technologies.
Mention the consequences of deforestation.
Dust, Carbon monoxide, Lead, Smog, Methane, Mercury, DDT, Cadmium.
| Column A | Column B (Examples) |
| (1) Particulate pollutant | __________________ |
| (2) Gaseous pollutant | __________________ |
| (3) Biomagnification | __________________ |
| (4) Heavy metals | __________________ |
The tobacco smoking is associated with the rise in blood pressure and emphysema (oxygen deficiency in the body). Explain.
Refer to the diagram given below and answer the questions that follows:
- The diagram shown above is insulin or proinsulin, justify.
- How is mature insulin synthesised?
Give the significance of transgenic animals for betterment of life.
Identify the labelled structures on the following diagram of translation.
Part A is the ………………
Part B is the ………………
Part C is the ………………
What would happen to immune system, if thymus gland is removed from the body of a person?