Chemical Coordination and Integration

AIPMT 2002MCQMedium📈 Topic in 25% papers+4−1

Ques. 1AIPMT 2002

Adrenaline directly affects

S.A. node
-cells of Langerhans
dorsal root of spinal nerve
epithelial cells of stomach

Answer

(1) S.A. node

Solution

As per NCERT, adrenaline and noradrenaline (emergency hormones) increase alertness, pupillary dilation, piloerection, sweating, the heart beat, the strength of heart contraction and the rate of respiration.

∵ The heart beat is set by the pacemaker, adrenaline acts directly on the S.A. node and raises the heart rate.

∴ Adrenaline directly affects the S.A. node.

Answer: (1)

Keep practising — Chemical Coordination and Integration

Ques. 2AIPMT 2002

When both ovaries are removed from rat then which hormone is decreased in blood?

Oxytocin
Prolactin
Estrogen
Gonadotropin releasing factor

Ques. 3AIPMT 2000

Melatonin is secreted by

pineal body
skin
pituitary gland
thyroid

Ques. 4AIPMT 2000

MSH is secreted by

anterior lobe of pituitary
middle lobe of pituitary
posterior lobe of pituitary
endostyle

All Chemical Coordination and Integration PYQs →

PDFDownload Chemical Coordination and Integration PYQs as PDF Free, with answer key and a QR code to every solution — print it or study offline⬇

All NEET Zoology chapters

Class 11Animal Kingdom Structural Organisation in Animals Biomolecules (Biology)Digestion and Absorption Breathing and Exchange of Gases Body Fluids and Circulation Excretory Products and their Elimination Locomotion and Movement Neural Control and Coordination Chemical Coordination and Integration

Class 12Human Reproduction Reproductive Health Evolution Human Health and Disease Biotechnology: Principles and Processes Biotechnology and its Applications Biology Experimental Skills