Which of the following factors increase the h | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The heart rate is regulated by the autonomic nervous system and endocrine factors:$1$. Sympathetic nerve signals increase the heart rate.$2$. Adre

Vedclass · Accepted Answer

$A, C, E$

Vedclass · Answer

(A) The heart rate is regulated by the autonomic nervous system and endocrine factors:$1$. Sympathetic nerve signals increase the heart rate.$2$. Adrenal medullary hormones (like adrenaline and noradrenaline) increase the heart rate.$3$. Thyroxine hormone increases the metabolic rate and heart rate.$4$. Parasympathetic nerve signals,the Vagus nerve (which carries parasympathetic signals),and Acetylcholine decrease the heart rate.Therefore,factors that increase the heart rate are $(A)$,$(C)$,and $(E)$.

Which of the following factors increase the heart rate?
$(A)$ Sympathetic nerve signals
$(B)$ Parasympathetic nerve signals
$(C)$ Adrenal medullary hormones
$(D)$ Vagus nerve
$(E)$ Thyroxine hormone
$(F)$ Acetylcholine

Similar Questions

Assertion $(A) :-$ Parasympathetic neural signals decrease the cardiac output.
Reason $(R) :-$ Parasympathetic neural signals decrease the rate of heartbeat and the speed of conduction of action potentials.

What stimulates the heartbeat?

What is the effect of the parasympathetic nervous system on the heart rate?

$A$: The resting heart rate,about $75$ beats/minute,is usually lower than the autorhythmic rate of the $SA$ node ($90-100$ beats/minute).
$R$: At rest,the parasympathetic nervous system effects dominate the heart rate.

How is the regulation of cardiac activity performed?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Which of the following factors increase the heart rate?$(A)$ Sympathetic nerve signals$(B)$ Parasympathetic nerve signals$(C)$ Adrenal medullary hormones$(D)$ Vagus nerve$(E)$ Thyroxine hormone$(F)$ Acetylcholine