Tag: cardiac cycle

Questions Related to cardiac cycle

'Bundle of His' is group of

biology transport in animals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Nerve fibres

  2. Ganglia

  3. Connective tissue

  4. Muscle fibres

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Correct Option: D
Explanation:

The bundle of His is a group of muscle cells that transmits the electrical impulses from AV node to the ventricle wall via Purkinje fibres. 

Which of the following statement is correct regarding humans?

biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Arteries always carry oxygenated blood while veins always carry deoxygenated blood

  2. Arteries. are provided with valves while veins are devoid of valves

  3. Arteries always carry blood away from the heart, while veins always carry blood towards the heart

  4. Venous blood is returned to the left ventricle

Show answer
Correct Option: C
Explanation:

Arteries carry blood oxygenated blood away from the heart. While the veins carry deoxygenated blood towards the heart.

Pulmonary artery carries deoxygenated blood to the lungs for oxygenation. Pulmonary vein brings oxygenated blood to heart. 
So, the correct answer is option C.

Pulmonary artery drains the deoxygenated blood from

biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Right atrium

  2. Right ventricle

  3. Left atrium

  4. Left ventricle

Show answer
Correct Option: B
Explanation:

Arteries carry oxygenated blood away from the heart.  Pulmonary artery carries the de-oxygenated blood from the right ventricle to the lungs for oxygenation.

So, the correct answer is option B.

Which of the following set is correct?

biology transport in animals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Sebum - Analgesic

  2. Vitamin - Nicotine

  3. Corpus callosum - Graffian follicle

  4. Bundle of His - Purkinje fibre

Show answer
Correct Option: D
Explanation:

The bundle of His is the upper end of the electrical path,which through the Purkinje fibres allows the electrical signal to activate the ventricles and thus to pump the blood.

So, the correct answer is 'Bundle of His - Purkinje fibre'.

The rate  of heart beat Per minute is highest in case of

biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Elephant

  2. Whale

  3. Man

  4. Mouse

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Correct Option: D
Explanation:

Under the normal conditions heart rate has an inverse relation with the size of the animal.

Vagus nerve slows down heart beat due to secretion of

biology transport in animals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Adrenaline

  2. Acetylcholine

  3. Norepinephrine

  4. Dopamine.

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Correct Option: B

Body receives blood through arteries. Which one is out of place?

biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Aorta

  2. Renal artery

  3. Coronary artery

  4. Pulmonary artery

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Correct Option: D
Explanation:
A. Aorta is the largest artery in body which supplies blood from heart to rest of the body parts.
B. Renal arteries are blood vessels that branch from abdominal aorta and supply blood to the kidneys.
C. Coronary arteries supply the oxygenated blood to heart.
D. Pulmonary artery carries deoxygenated blood from right ventricle to the lungs. 
Hence, body receives blood through arteries except the lungs which receive deoxygenated blood through pulmonary artery.
So, the correct answer is 'Pulmonary artery'.

Neurogenic heart is characteristic of

biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Humans

  2. Lower invertebrates

  3. Rat

  4. Rabbit.

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Correct Option: B

Pulmonary artery carries

biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Pure blood from heart to lungs

  2. Pure blood from heart to stomach

  3. Impure blood from heart to lungs

  4. Pure blood from lungs to heart.

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Correct Option: C

Pulmonary artery drains deoxygenated blood from

biology transport in mammals cardiac cycle heart, blood vessels and cardiac cycle human heart

  1. Right ventricle

  2. Right atrium

  3. Left atrium

  4. Left ventricle.

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Correct Option: A