MCQ Bank
Atrial contraction provides only ___ volume of total mammalian ventricular output
- A) 30%
- B) 40%
- C) 35%
- D) 45%
Animals use oxygen for _____ respiration.
- A) TCA
- B) Surface
- C) cellular
- D) Kreb cycle
Average cardiac output for resting adult human is ______.
- A) 5 L/min
- B) 2.5 L/min
- C) 5.5 L/min
- D) 6 L/min
QRS Complex indicates _____ of ventricles.
- A) Hyperpolarization
- B) Repolarization
- C) Spike potential
- D) Depolarization
During diastole the ____ valves are closed.
- A) Purkinji fiber
- B) Vana cava
- C) Aortic
- D) Ventricular
_____ lungs in amphibians are just like a smooth-walled pouch.
- A) Spongy
- B) squamata
- C) Urodeles
- D) Bilateral
Cardiac impulses causes _____ changes while passing through the heart muscles.
- A) Pressure
- B) Electrical
- C) Chemical
- D) Mechanical
Kymograph Apparatus consists of a revolving drum to which a writing ____ is attached
- A) Graph
- B) Drum
- C) Pen
- D) Stylus
Left _____ pumps oxygenated blood into the aorta.
- A) Auricle
- B) Ventricle
- C) Atria
- D) Vein
Acetylcholine increases _____ ion conductance of pacemaker cells.
- A) HCL
- B) Cl-
- C) K+
- D) Na+
Flow of blood depends both on pressure and ____ energy
- A) Gradient
- B) Force
- C) Potential
- D) Kinetic
Kymography does not helps to study the effects of _______ on cardiac output.
- A) Temperature
- B) Vasopression
- C) ACH
- D) Epinephrine
_____ blood pressure is highest during ventricular systole.
- A) Capillaries
- B) Heart
- C) Venous
- D) Arterial
Quantity of blood pumped into the aorta each minute by the heart is called as _____.
- A) Pacemaker
- B) Diastole output
- C) S.A node output
- D) Cardiac output
Acetylcholine slows the heart rate that is called as negative _______.
- A) Isotropic effect
- B) Anisotropic effect
- C) Chronotropic effect
- D) Masking effect
Cross sectional area of airways decrease in diameter of individual air ducts from _____ to the terminal bronchioles.
- A) Air sacs
- B) Trachea
- C) Alveoli
- D) Lungs
Resistance to flow is overcome by pressure when the heart contracts and the pressure in the ____ increases
- A) Arteries
- B) Ventricles
- C) Vanacava
- D) Aorta