Question

Instructors may of the Review SH using Masterin REVIEW SHEET Anatomy of the Respiratory System EXERCISE Name Lab Time/Date Upper and lower Respiratory System Structures 1. Complete the labeling of the model of the respiratory structures (sagittal section) shown below. 2. Two pairs of mucosal folds are found in the larynx. Which pair are the true vocal cords (superior or infer 3. Name the specific cartilages in the larynx that correspond to the following descriptions. shaped like a ring forms the Adam's apple: al cord attachment:

Answer 1

1. The labelled sagittal section of respiratory structures is attached below:

Middle concha Inferior concha Nose Hard palate Choana Soft palate -Uvula Palatine tonsil Epiglottis Larynx Vocal cord Thyroid gland

2. Two pairs of mucosal folds are found in the larynx. The true vocal cords are the inferior pair. The first pair is known as 'false vocal cords' and the second pair is the 'true vocal cords'.

3. Forms the Adam's apple: "Thyroid cartilage" forms the Adam's apple. Adam's apple is a feature of human neck which is formed by the angle of thyroid cartilage.

Shaped like a ring: "Cricoid cartilage" is shaped like a signet ring, which is located at the lower part of larynx.

10. The correct matching is:

COLUMN A	COLUMN B
1	k
2	b
3	e
4	d
5	g
6	f
7	j
8	a
9	i
10	l
11	c
12	h

Justification:

1. Trachea connects larynx to the main bronchi because trachea extends from larynx into two primary bronchi.

2. Bronchiole includes terminal and respiratory as subtypes.

3. Esophagus is the food passageway which is located posterior to the trachea.

4. Epiglottis covers glottis during the swallowing of the food

5. Larynx contains vocal cords.

6. Hilum is the indentation on the lung where the lung root structures enter and exit.

7. The pleural layer which lines the walls of thorax is the 'parietal pleura'.

8. Alveolus is the site from which oxygen enters the pulmonary blood.

9. Pharyngotympanuc tube connects the middle ear to the nasopharynx.

10. 'Visceral pleura' is the pleural layer which lies in contact with the surface of lung.

11. Conchae increases air turbulence in the nasal cavity.

12. Palate separates the oral cavity from the nasal cavity.

11. All the portions of respiratory system are referred as anatomical dead space except the respiratory zone structures like respiratory bronchioles, alveolar ducts and sacs, alveoli because no gaseous exchange takes place in all the portions of respiratory system except in these respiratory zones.

12. External respiration: It occurs in lungs in which oxygen diffuses into lungs and carbon dioxide diffuses into air.

Internal respiration: It occurs in metabolizing tissues in which, oxygen diffuses into blood and carbon dioxide diffuses out of the cells.

Thank you!