MCQ
Which of the following is associated with decrease in cardiac output?
- AAdrenal medullary hormones
- BSympathetic nerves
- ✓Parasympathetic neural signals
- DPneumotaxic centre
✓
Answer
Correct option: C.
Parasympathetic neural signals
c
Option (3) is the correct answer.
Option (3) is the correct answer.
Parasympathetic neural signals decrease the rate of heart beat, speed of conduction of action potential, stroke volume and thereby the cardiac output.
Adrenal medullary hormones increase cardiac output.
Sympathetic neural signals increase the rate of heart beat, strength of ventricular contraction and thereby the cardiac output.
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
Following pedigree chart shows
Match the following and mark the correct option
→Column $A$ Column $B$
(i) Oncogenes (1)Causes $AIDS$
(ii) Single circular $DNA$ (2)Lac-Operon concept
(iii) Splicing (3) Component of bacterial chromosome
(iv) Jacob and Monad (4) Processing of $mRNA$ molecules
(5) When activated cause cancer
$(i) (ii) (iii) (iv)$ respectively
The percentage of crossing over will be more if
The chief difference between $RBCs$ of Human and Frog
→Body tissues obtain ${O_2}$ from oxyhaemoglobin because of its dissociation caused by
→A farmer crossed a walnut combed chicken with a single combed one and obtained all walnut combed chickens in $F_1$. The genotype of the parents was
→Choose correct sequence of mechanism of vision
(i) The light rays in visible wavelength focused on the retina through the cornea and lens
(ii) Light induces dissociation of the retinal from opsin resulting in changes in the structure of the opsin
(iii) This causes membrane permeability changes.
(iv) Potential differences are generated in the photoreceptor cells rods and cones
(v) This produces a signal that generates action potentials in the ganglion cells through the bipolar cells.
(vi) These action potentials (impulses) are transmitted by the optic nerves to the visual cortex area of the brain.
(vii) Where the neural impulses are analysed and the image formed on the retina is recognised based on earlier memory and experience.
(i) The light rays in visible wavelength focused on the retina through the cornea and lens
(ii) Light induces dissociation of the retinal from opsin resulting in changes in the structure of the opsin
(iii) This causes membrane permeability changes.
(iv) Potential differences are generated in the photoreceptor cells rods and cones
(v) This produces a signal that generates action potentials in the ganglion cells through the bipolar cells.
(vi) These action potentials (impulses) are transmitted by the optic nerves to the visual cortex area of the brain.
(vii) Where the neural impulses are analysed and the image formed on the retina is recognised based on earlier memory and experience.
Delete the odd one
$CCK$ is secreted by
→Which one of the following vein breaks up into capillaries