Trachea

Q.

Cartilaginous rings are not present in______

1. Primary Bronchi

2. Terminal Bronchioles

3. Trachea

4. Secondary Bronchi

Q. The members of the Class Cyclostomata have

1. bony cranium and vertebral column.
2. bony cranium and cartilaginous vertebral column.
3. cartilaginous cranium and bony vertebral column.
4. cartilaginous cranium and vertebral column.

Q. Which of the following is present in the human trachea?

1. Ventrally incomplete C-shaped rings of hyaline cartilage
2. Dorsally incomplete C-shaped rings of elastic cartilage
3. Dorsally incomplete C-shaped rings of hyaline cartilage
4. Ventrally incomplete C-shaped rings of elastic cartilage rings

Q.

Give reasons for the following.

The walls of the trachea are supported by cartilaginous rings.

Q. Choose from the options given below, the type of cartilage which is composed only of elastic cartilage.

1. Thyroid Cartilage
2. Cricoid Cartilage
3. Both a and b
4. Corniculate Cartilages

Q. Which of the following is the main structural difference between the trachea and bronchi?

1. C-shaped cartilaginous rings
2. Smooth muscle
3. Mucous glands
4. Ciliated cells

Q.

The epithelial lining of the inner wall of trachea bears cilia. What may be the purpose of this?

1. Cilia help in pushing the air downwards

2. Cilia help in cleaning the air

3. Cilia beat upwards to push mucus out

4. Cilia are non-functional in the trachea

Q.

The epithelial lining of the inner wall of trachea bears cilia. What may be the purpose of this?

1. Cilia help in pushing the air downwards

2. Cilia help in cleaning the air

3. Cilia beat upwards to push mucus out

4. Cilia are non-functional in the trachea

Q. Assertion :Tracheae, primary, secondary and tertiary bronchi are supported by incomplete cartilaginous rings. Reason: These rings of cartilage make the wall non-collapsible.

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. Assertion : ${\mathrm{CO}}_2$ easily diffuses from alveoli to tissues and ${\mathrm{CO}}_2$ from tissue to alveoli.

Reason : Alveoli is 2-celled thick and capillaries are thin walled.

1. Both A and R are true and R is the correct explanation of A
2. Both A and R are true but R is not correct explanation of A
3. A is true but R is false
4. A and R are false

Q. Choose from the options given below, the type of cartilage which is composed only of elastic cartilage.

1. Thyroid Cartilage
2. Cricoid Cartilage
3. Both a and b
4. Corniculate Cartilages

Q. Which of the following is the main structural difference between the trachea and bronchi?

1. C-shaped cartilaginous rings
2. Smooth muscle
3. Mucous glands
4. Ciliated cells

Q. Hyaline cartilage is found in

1. Santorini of larynx
2. Eustachian tubes
3. Tracheal rings
4. Epiglottis

Q. Which of the following induces the epithelial cells below the scab to undergo mitosis?

1. Epidermal growth factor
2. Glial growth factor
3. Fibroblast growth factor
4. None of the above

Q.

There are microscopic air sacs called___located at the___of the bronchioles.

Q.

The epithelial lining of the inner wall of trachea bears cilia. What may be the purpose of this?

1. Cilia help in pushing the air downwards

2. Cilia help in cleaning the air

3. Cilia beat upwards to push mucus out

4. Cilia are non-functional in the trachea

Q. C shaped cartilaginous rings are NOT found after

1. Secondary bronchi
2. Tertiary bronchi
3. Primary bronchi
4. Bronchioles

Q. Which of the following branches of trachea is supported by cartilaginous rings?

1. Terminal bronchioles.
2. Tertiary bronchi.
3. Alveoli.
4. Bronchioles

Q. Miss bronchioles are divided into initial bronchioles, terminal bronchioles and respiratory bronchioles?

Q. Hyaline cartilage is present at

1. The ends of digits
2. Articular ends of long bones
3. Epiglottis of mammals
4. None of these

Q. Fill in the blanks with approriate words.
In humans, the trachea is strengthened by incomplete .......... rings.

Q. Extremities of long bones have

1. Elastic cartilage
2. Calcified cartilage
3. Hyaline cartilage
4. Fibrous cartilage

Q.

The trachea divides into two smaller tubes called ___.

1. bronchi

2. trachea

3. microtrachea

4. eustachian tubes

Q. What do the trachea and bronchi possess in their wall of the respiratory tract in man?

1. C-shaped cartilagenous rings
2. C-shaped bony rings
3. V-shaped cartilagenous rings
4. V-shaped bony rings

Q.

The trachea divides into two smaller tubes called ___.

1. bronchi

2. trachea

3. microtrachea

4. eustachian tubes

Q. Which of the following is present in the human trachea?

1. Ventrally incomplete C-shaped rings of hyaline cartilage
2. Dorsally incomplete C-shaped rings of elastic cartilage
3. Dorsally incomplete C-shaped rings of hyaline cartilage
4. Ventrally incomplete C-shaped rings of elastic cartilage rings

Q. Type of cartilages in larynx of rabbit, according to shape, are

1. 3
2. 4
3. 1
4. 2

Q. Read the given statements and choose correct answer :-
(i) Initial bronchioles are supported by incomplete cartilagenous rings.
(ii) In human lungs are solid and spongy.
(iii) Alveoli wall contains simple squamous epithelium and white fibrous connective tissue (iv) Lungs are covered by a single layered pleura

1. Three statements are correct
2. Only two statements are correct
3. Three statements are incorrect
4. None of them

Q. Cartilage of Santorini articulates with

1. Cricoid
2. Arytenoid
3. Thyroid
4. None of the above

Q. What is the difference between bronchioles., bronchi, bronchus??