Download App

STD 11 - 15. Body fluids and criculations — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 15. Body fluids and criculations1 Mark
MCQ
Which structure first generate an action potential ?
  • A
    Perkinje fibres
  • B
    His bundles
  • ✓
    $SAN$
  • D
    $AVN$
✓

Answer

Correct option: C.
$SAN$
c

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from STD 11 - 15. Body fluids and criculations→STD 11 - 15. Body fluids and criculations — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Read the different components from $(i)$ to $(iv)$ in the list given below and tell the correct order of the components with reference to their arrangement from outer side to inner side in a woody dicot stem.

$(i)$ Secondary cortex $(ii)$ Wood $(iii)$ Secondary phloem $(iv)$ Phellem The correct order is

→
Identify from the following, a hormone produced by the pituitary gland in both males and females but functional only in females.
→
The ascending arm of Henle's loop is permeable to:
→
Which of the following is also known as the amphibian of the Plant Kingdom?
→
Assertion : Sponges have body organization of "cellular level".
Reason : There is some physiological division of labour.
→
Which of the following is necessary for respiration in plants
→
Arrange the following terms based on their volumes in an ascending order:
→
Evolutionary important character of Selaginella is:
→
Ensheathing of muscles is called
→
Kidneys are located in:
→