Medical Mcqs

Unmyelinated fibres differ from myelinated fibers in that they ______________?

• (A)  Have increased excitability
• (B)  Have to nodes of Ranvier
• (C)  Have no power of regeneration
• (D)  Have no association of Schwann cells

Answer

Submitted By :Ali Uppal

The Sensory receptors serving the stretch reflex are classified as___________?

• (A)  Proprioceptors
• (B)  Nociceptors
• (C)  Exteroceptors
• (D)  Chemo receptors

Answer

Submitted By :Ali Uppal

Abdominal visceral pain is transmitted by ________________?

• (A)  fibers
• (B)  fibers
• (C)  Parasympathetic fibers
• (D)  Sympathetic fibers

Answer

Submitted By :Ali Uppal

Absolute period when whole heart is in diastole is______________?

• (A)  0.7 seconds
• (B)  0.3 seconds
• (C)  0.7 seconds
• (D)  0.4 seconds

Answer

Submitted By :Ali Uppal

Cardiac output is maximum to _________________?

• (A)  Liver
• (B)  Brain
• (C)  Kidney
• (D)  Heart

Answer

Submitted By :Ali Uppal

Effect on force of contraction of heart is_____________?

• (A)  Chronotropic effect
• (B)  Dromotropic effect
• (C)  Bathmotropic
• (D)  Ionotropic effect

Answer

Submitted By :Ali Uppal

Distribution of blood flow is mainly regulated by the________________?

• (A)  Arteries
• (B)  Arterioles
• (C)  Capillaries
• (D)  Venules

Answer

Submitted By :Ali Uppal

Ventricular muscle receives impulses directly from the_______________?

• (A)  Purkinje system
• (B)  Bundle of HIS
• (C)  Right and left bundle branches
• (D)  AV node

Answer

Submitted By :Ali Uppal

Isovolumetric relaxation ends immediately after________________?

• (A)  AV Valve closes
• (B)  When ventricular pressure falls below aortic pressure
• (C)  When ventricular pressure falls below atrial pressure
• (D)  None of the above

Answer

Submitted By :Ali Uppal

Heart muscle, true are all except_______________?

• (A)  Act as syncytium
• (B)  Has multiple nuclei
• (C)  Has gap junctions
• (D)  Has branching

Answer

Submitted By :Ali Uppal