This is medical MCQs section with detailed explanations for preparation of screening tests, interviews for government jobs. In this section candidate will learn MCQs on variety of topics from the subject.
is capable of generating impulses
Has rich sympathetic innervation
Has poor cholinergic innervation
Generates impulses at the highest rate
See Answer
Added By: Admin
Answer
: Generates impulses at the highest rate
Explanation
: N/A
Reflex hyperpnea
Reflex Hypercapnia
Reflex tachycardia
: Reflex Hypercapnia
Increases heart rate
Decreases myocardial irritability
Increases force of contraction
Increases oxygen uptake by heart
: Decreases myocardial irritability
Isotonic relaxation
Isovolumetric relaxation
Isovolumetric contraction
Isotonic contraction
: Isovolumetric contraction
Cardiac efficiency
Cardiac index
Mean stroke volume
Mean arterial pressure
: Mean stroke volume
2.5
4.25
5.25
9.5
: 5.25
AV node
SA node
Purkinje fibers
: AV node
Lasts till cardiac contraction
Longer than refractory period in skeletal muscle
A phase of cardiac cycle in which heart cannot be stimulated by any amount of stimulus
Corresponds with duration of action potential
All of the above
: All of the above
Hyperplasia
Hypertrophy
Fatty infiltration
Increased amounts of fibrous connective tissue
: Hypertrophy
Aorta
Artery
Arteriole
Vein
: Arteriole
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