Question

1/21 & 1/23 assignment
regions of the pharynx
instructions: identify the regions on the pharynx

1. item 1:
2. item 2:
3. item 3:

review, part 2
instructions: answer the following questions.

1. what is the purpose of the epiglottis?

answer:

1. what structures are considered to be part of the lower respiratory tract?

answer:

1. what does the term ciliated mean?

answer:

1. what does the term bifurcate mean?

answer:

Explanation:

Pharynx Identification:

1. The uppermost region of the pharynx, behind the nasal cavity, is the nasopharynx.
2. The middle region, behind the oral cavity, is the oropharynx.
3. The lowermost region, behind the larynx, is the laryngopharynx.

Review Part 2:

1. The epiglottis is a flap of tissue that closes over the trachea during swallowing to prevent food/liquid from entering the airway.
2. The lower respiratory tract includes structures below the larynx, responsible for gas exchange and air conduction deeper in the lungs.
3. "Ciliated" describes cells or structures covered in hair-like projections called cilia, which move to transport substances.
4. "Bifurcate" refers to the act of splitting or dividing into two branches or parts.

Answer:

Pharynx Regions:

1. Item 1: Nasopharynx
2. Item 2: Oropharynx
3. Item 3: Laryngopharynx

Review Part 2:

1. It closes over the trachea during swallowing to prevent food and liquid from entering the respiratory airway, directing them to the esophagus instead.
2. Trachea (windpipe), bronchi, bronchioles, and alveoli (and the lungs themselves)
3. Having hair-like, motile projections called cilia (typically referring to epithelial cells) that help move mucus or other substances across a surface.
4. To split or divide into two separate branches or parts.