(iii) SAN is located on the left upper corner of the right
atrium.
(iv) Stroke volume × Heart rate = Cardiac output.
(a) (i) only (b) (i) and (ii)
(c) (ii) and (iii) (d) (iv) only
- Match column I with column II and select the correct option
from the codes given below.
Column I Column II
A. Superior vena cava (i) Carries deoxygenated
blood to lungs
B. Inferior vena cava (ii) Carries oxygenated
blood from lungs
C. Pulmonary artery (iii) Brings deoxygenated
blood from lower part of
body to right atrium
D. Pulmonary vein (iv) Bring deoxygenated
blood from upper part of
body to right atrium
(a) A-(ii), B-(iv), C-(iii), D-(i)
(b) A-(iv), B-(i), C-(ii), D-(iii)
(c) A-(iv), B-(iii), C-(i), D-(ii)
(d) A-(iv), B-(i), C-(iii), D-(ii)
- Coronary heart disease is due to
(a) streptococci bacteria
(b) inflammation of pericardium
(c) weakening of the heart valves
(d) insufficient blood supply to the heart muscles.
- The given figure shows schematic plan of blood circulation
in humans with labels A to D.
Identify the label and give its
functions.
(a) C-Vena cava - takes blood
from body parts to right
auricle, pCO 2 = 45 mm Hg
(b) D-Dorsal aorta - takes blood
from heart to body parts, pO 2 = 95 mm Hg
(c) A-Pulmonary vein - takes impure blood from body
parts, pO 2 = 60 mm Hg
(d) B-Pulmonary artery - takes blood from heart to lungs,
pO 2 = 90 mm Hg (NEET 2013)
- Father of the electrocardiography is
(a) Waller (b) Willam Harvery
(c) Chardack (d) Einthoven.
- Papillary muscles occur in
(a) ventricles
(b) auricles
(c) atrioventricular valves
(d) pulmonary valves.
10. If vagus nerve to heart is cut the heartbeat will
(a) decrease (b) increase
(c) remain normal (d) stop.
11. Given below is the ECG of a normal human. Which one of
its components is correctly interpreted below?
(a) Complex QRS - one complete pulse
(b) Peak T - initiation of total cardiac contraction
(c) Peak P and peak R together - systolic and diastolic blood
pressures
(d) Peak P- initiation of left atrial contraction only
- How many double circulations are normally completed by the
human heart, in one minute?
(a) Eight (b) Sixteen
(c) Seventy two (d) Thirty six
- During acute myocardial infarction which of the following
changes occurs in the ECG?
(a) Flattened T wave
(b) Depressed ST segment
(c) Elevated ST segment
(d) Increased length of PQ interval
- A heart murmur indicates a defective
(a) sinoatrial node (b) atrioventricular node
(c) bundle of His (d) heart valve.
- Which of the following contains blood with the lowest
oxygen content?
(a) Aorta (b) Left atrium
(c) Right ventricle (d) Pulmonary veins
- Blood pressure is controlled by
(a) thyroid gland (b) adrenal gland
(c) thymus gland (d) parathyroid gland.
- What happens when the pacemaker becomes non-functional?
(a) Only auricles contract rhythmically.
(b) Only ventricles contract rhythmically.
(c) Cardiac muscles do not undergo co-ordinated rhythmic
movements.
(d) Auricles and ventricles contract rhythmically.
- Identify the correct statement regarding cardiac activity.
(a) Normal activities of the human heart is regulated
intrinsically, hence, it is neurogenic.
(b) A special neural centre in the medulla oblongata can
moderate the cardiac function through the CNS.
(c) Parasympathetic neural signals increase the rate of heart
beat.
(d) Adrenal medullary hormones can increase cardiac output.
(e) The end of a T-wave marks the end of diastole.
(Kerala PMT 2014)
