Cardiac Regulation

Q.

What is the relationship between Blood pressure and Cardiac output?

Q.

What is the scientific name of the human heart?

Q.

What is the hearts natural pacemaker?

Q.

Heartbeat is controlled by

1. nerves only

2. enzymes only

3. hormones only

4. both nerves and hormones

Q. Which of the following statements is correct regarding the neural regulation of cardiac activity?

1. Parasympathetic nerve fibres accelerate the rate of heart beat and
2. Sympathetic nerve fibres retard the rate of the heart beat
3. All of these
4. The cardiac centre lies in the medulla oblongata of the brain

Q. Adrenal medullary hormone increases the cardiac output. This hormone is released by:

1. Adrenal glands located on kidneys
2. None of the above
3. Adrenal glands located in liver
4. Adrenal glands located in hypothalamus

Q. Statement 1: Parasympathetic neural system increases the rate of heart beat.
Statement 2: Sympathetic neural system decreases the rate of heart beat.

1. Statement 1 is true but statement 2 is false
2. Statement 2 is true but statement 1 is false
3. Both the statements are incorrect
4. Both the statements are correct

Q.

The organ system that brings about coordination and integration of different body activities is called the __________ system.

Q. If vagus/ parasympathetic nerve to heart is cut, the heart beat will

1. Increase
2. Remain normal
3. Stop
4. Decrease

Q.

Bundle of His originates from

1. Sino – Atrial node

2. Auriculo – ventricular node

3. Pulmonary aorta

4. Systemic aorta

Q. If a man is starving and also without beverages, there will be

1. more urea in blood
2. less urea in blood
3. more uric acid in blood
4. less urea in urine

Q.

Which layer of the heart contains the pacemaker?

Q. Adrenal medullary hormones _______________ the heart rate.

1. stabilize
2. decrease
3. increase
4. has no impact on

Q.

Why is a pacemaker important for the heart?

Q. Assertion :Neural signals through sympathetic nerves can increases the strength of ventricular contraction. Reason: Parasympathetic neural signals synergistically act with sympathetic neural signal to increase the cardiac output.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Read the following statements and find out the incorrect statement.

(a) All vertebrates and a few invertebrates have a closed circulatory system.

(b) Hypertension leads to heart disease and also affects vital organs like brain and lungs.

(c) CAD affects the vessels that supply blood to the skeletal muscles.

(d) In angina, a symptom of chronic chest pain appears when no enough oxygen is reaching the heart muscle.

(e) Heart attack means the state of heart when it is not pumping blood effectively enough to meet the needs of the body.

1. $b,c,d$ and $e$
2. $a$ and $d$
3. $b,c$ and $d$
4. $b,c$ and $e$

Q.

What is the best neural network model for temporal data?

Q.

How is respiration regulated

Q. A chemical that prevents blood clotting is most useful in the treatment of

1. Leukaemia
2. Anaemia
3. Coronary thrombosis
4. Haemophilia

Q. Which of the following hormones do not have any effect on the volume and/ or composition of urine produced by the kidneys?

1. Aldosterone
2. Vasopressin
3. Atrial natriuretic peptide
4. None of the of above

Q. Adrenal medullary hormone increases the cardiac output. This hormone is released by:

1. Adrenal glands located on kidneys
2. Adrenal glands located in liver
3. Adrenal glands located in hypothalamus
4. None of the above

Q.

Go through the following statements: (i) The stroke volume multiplied by heart rate gives the cardiac output. (ii) The second heart sound is associated with the closure of semilunar valves. (iii) Heart failure is the same as cardiac arrest or a heart attack. Which of these are correct?

1. (i) & (ii)

2. (ii) & (iii)

3. (i) & (iii)

4. All are correct

Q. Researchers have found increased levels of hormones from the ________ in the blood of students preparing for final exams. These hormones are produced in response to stress.

1. thyroid gland
2. pineal gland
3. posterior pituitary
4. adrenal glands

Q.

The pace maker of the heart

1. Bundle of His

2. A V node

3. Purkinje Fibres

4. S A node

Q. What happens when a clot occurs in an undamaged blood vessels?

1. The flow of blood to tissues beyond the clot will be reduced
2. Excessive bleeding
3. A scab will form on the skin surfaces
4. Platelets stick to the edges of the cut and to one another, forming a plug

Q.

Is there any effect of temperature on our heart beat?

If yes, then how will it change by increasing per degree celcius?

Q. Select the correct statement with respect to locomotion in humans :

1. A decreased level of progesterone causes osteoporosis in old people.
2. Accumulation of uric acid crystals in joints causes their inflammation.
3. The vertebral column has 10 thoracic vertebrae.
4. The joint between adjacent vertebrae is a fibrous joint.

Q. Name the following

The part inside the heart that intiates heartbeat.

Q. Which of the following can increase the rate of heart beat?
(A) Sympathetic neural signal
(B) Parasympathetic neural signal
(C)Adrenal medullary hormones
(D) Vagus nerve
(E) Thyroxine hormone
(F) Acetylcholine

1. D, E, F
2. A, C, D
3. B, D, F
4. A, C, E

Q. Consider the following four statements (i) - (iv) and select the correct option.
(i) Fish heart contains only oxygenated blood.
(ii)Closure of A-V valves produces the second heart sound.
(iii) The vascular connection between the digestive tract and kidney is called hepatic portal system.
(iv) Purkinje fibres are nerve fibres present in the heart wall.

1. i - F, ii - F, iii - T, iv - F
2. i - F, ii - F, iii - F, iv - T
3. i - T, ii - T, iii - F, iv - T
4. i - T, ii - F, iii - T, iv - F