Selina solutions

Selina solutions

Grade 6

The circulatory system | Long Answer Questions (LA)

Question 2

Q1) Name the three kinds of blood vessels found in human beings. With the help of suitable diagrams, differentiate between them.

Solution:

The three kinds of blood vessels found in human beings are arteries, veins and arterioles.

  1. Arteries are the blood vessels that carry blood from the heart to the various parts of the body.
  2. Veins are the blood vessels that carry blood from the body parts to the heart.
  3. Capillaries are the smallest of the body’s blood vessels. These are the terminal branches of an artery, which rejoin to form a vein. A capillary is a very narrow tube whose walls have a single layer of cells with no muscles.

Differences:

Arteries:

  1. Arteries carry oxygenated blood away from the heart to the body.
  2. Arteries are strong, flexible blood vessels that are able to expand and contract.
  3. Have thick and more muscular walls.
  4. The blood flows with jerks and under great force.

Veins:

  1. Veins carry deoxygenated blood from your body to your heart.
  2. Veins are less flexible than arteries.
  3. Have thin and less muscular walls.
  4. The blood flows smoothly and under little pressure.

Capillaries:

  1. Capillaries are very tiny blood vessels, so small that a single red blood cell can barely fit through them.
  2. They allow oxygen and nutrients to flow to nearby tissue.
  3. The walls of the capillaries are very thin and are on cell deep.
  4. They help to connect arteries and veins in addition to facilitating the exchange of certain elements between blood and tissues.

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Question 2

Q1) Name the three kinds of blood vessels found in human beings. With the help of suitable diagrams, differentiate between them.

Solution:

The three kinds of blood vessels found in human beings are arteries, veins and arterioles.

  1. Arteries are the blood vessels that carry blood from the heart to the various parts of the body.
  2. Veins are the blood vessels that carry blood from the body parts to the heart.
  3. Capillaries are the smallest of the body’s blood vessels. These are the terminal branches of an artery, which rejoin to form a vein. A capillary is a very narrow tube whose walls have a single layer of cells with no muscles.

Differences:

Arteries:

  1. Arteries carry oxygenated blood away from the heart to the body.
  2. Arteries are strong, flexible blood vessels that are able to expand and contract.
  3. Have thick and more muscular walls.
  4. The blood flows with jerks and under great force.

Veins:

  1. Veins carry deoxygenated blood from your body to your heart.
  2. Veins are less flexible than arteries.
  3. Have thin and less muscular walls.
  4. The blood flows smoothly and under little pressure.

Capillaries:

  1. Capillaries are very tiny blood vessels, so small that a single red blood cell can barely fit through them.
  2. They allow oxygen and nutrients to flow to nearby tissue.
  3. The walls of the capillaries are very thin and are on cell deep.
  4. They help to connect arteries and veins in addition to facilitating the exchange of certain elements between blood and tissues.

Still have questions? Our expert teachers can help you out

Book a free class now

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Book a free class now
subject-cta
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