Question

question 110
0.25 pts
the breast—the mammary gland and surrounding tissue—is drained by the:

• lymphatics that originate in and drain the skin over the breast with the exception of the areola and nipple.
• lymphatics that originate in and drain the substance of the breast itself, as well as the skin of the areola and nipple.
• inguinal lymph nodes.
• both a and b are correct.

question 111
0.25 pts
the respiratory portion of the nasal passage is lined with a mucous membrane made up of ____ epithelium.

• stratified columnar
• pseudostratified columnar
• simple squamous
• simple columnar

Explanation:

Question 110

To determine the correct answer, we analyze the lymphatic drainage of the breast:

• Option A: Lymphatics drain the skin over the breast except areola/nipple (correct part of breast lymph drainage).
• Option B: Lymphatics drain the breast substance and areola/nipple skin (also correct part of drainage).
• Option C: Inguinal lymph nodes do not primarily drain the breast (breast is mainly drained by axillary nodes, so C is incorrect).
• Option D: Since both A and B describe correct components of breast lymph drainage, D is correct.

The respiratory portion of the nasal passage's mucous membrane epithelium:

• Stratified columnar: Not typical for respiratory nasal mucosa.
• Pseudostratified columnar: This is the correct epithelium (has cilia, goblet cells, lines respiratory passages including nasal respiratory portion).
• Simple squamous: Lines areas like alveoli, not nasal respiratory mucosa.
• Simple columnar: Not the typical epithelium for nasal respiratory portion.

So the correct option is pseudostratified columnar.

Answer:

D. Both A and B are correct.

Question 111