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The cilia lining the upper respiratory passages (superior to the larynx) beat inferiorly, whereas as the cilia lining the lower

Anton [14]

Answer:

The cilia in the upper respiratory tract move mucus down toward the pharynx whereas the cilia in the lower respiratory tract move them up toward the pharynx.

Explanation:

Through the internal nares, the air enters nasopharynx from the nasal cavity. This air has dust-laden mucus. The nasopharynx is lined with ciliated pseudostratified columnar epithelium. These cilia move the mucus down toward the most inferior part of the pharynx. The lining of the larynx inferior to the vocal folds is made up of ciliated pseudostratified columnar epithelium and have ciliated columnar cells, goblet cells, and basal cells.

The goblet cells serve to produce and secrete mucus. The mucus from goblet cells helps trap dust that was not removed in the upper passages. Therefore, the cilia in the upper respiratory tract move mucus and trapped particles down toward the pharynx whereas the cilia in the lower respiratory tract move them up toward the pharynx.

7 0

3 years ago

Which structures are highlighted? Which structures are highlighted? duodenal glands Peyer's patches (aggregated lymphoid nodules

lilavasa [31]

Answer: (<u>Note</u>: You will find the image with the highlighted structure in the attached file)

Peyer's patches (aggregated lymphoid nodules)

Explanation:

Peyer's patches are anatomical regions located under the mucosa of the gastrointestinal tract, specifically in the lamina propria of the thin intestine. These patches are nodules or cumulus of lymphatic tissue and other accessory cells, and this is why they represent a huge part of the mucosa´s immunity system.

Peyer's patches belong to the group of lymphoid tissue associated with the intestine, composed of lymphoid follicles distributed along the gastrointestinal tract.

A lymphoid follicle is a cumulus or aggregate of lymphoid cells that do not have a well-defined structure nor organization. In general, these follicles are isolated from each other in the intestine. But in the terminal ileum (The last portion of the thin intestine) they get so close that they might form a plaque. The Peyer´s patches are formed principally by lymphocytes B that synthesize immunoglobulin A, which has an important role in immunity.

7 0

3 years ago

Dogs or Cats?<br> I choose cats.

Elanso [62]

Answer:

dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs

dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs

dogs dogs dogs dogs cats dogs dogs dogs dogs dogs

dogs dogs dogs dogs dogs dogs dogs dogs dogs dogs

Explanation:

monkey monkey monkey monkey monkey

3 0

2 years ago

What are the hyphae and mycelium of fungi?

Bumek [7]

Answer:

The two terms refer to the building blocks of fungi. Hyphae (plural form; singular form is hypha) is the name of the long, individual pieces that comprise a mycelium. Hyphae are often described as strings and threadlike filaments. ... On the other hand, mycelium (plural form – mycelia) is the vegetative part of the fungus.

Explanation:

I just copy this thank you

5 0

3 years ago

Which organism has cerebral ganglia in its head connected to ladder-like arrangements of nerve fibers?

dmitriy555 [2]

The organism that cerebral ganglia in its head connected to ladder-like arrangements of nerve fibers is

A. flatworms

A flatworm is an invertebrate whose central nervous system or the cerebral ganglia is connected to its body by means of ladder-like nerve cords.

8 0

3 years ago

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