11. Which structures are part of the respiratory division? B. Respiratory Histol

ID: 262757 • Letter: 1

Question

11. Which structures are part of the respiratory division? B. Respiratory Histology . For each of the following parts of the respiratory tract, indicate the type of epithelium found there mple squamous, stratified squamous, pseudostratified ciliated columnar), and why that location uires the type of epithelium that it has Part Respiratory Tracy vestibule (of the nostril laryngopharynx nasal cavi Nasopharynx Oropharynx Alveoli of the Type of Epithelium 2. What is "respiratory epithelium" What purpose does it serve? Make sure that you discuss the mucociliary escalator in your answer C. Stages of Respiration 1. Describe the events that take place in each of the following stages of respiration. Make sure to note where in the body each stage takes place and in which direction each gas molecule is moving Stage of Respiration Ventilation Description External Respiration Transport Internal Respiration Cellular Respiration (give reaction) D. Connecting the respiratory and circulatory systems. 1. During ventilation, where does O; come from and where is it going? Name the major structures that it encounters (in sequence) 2. Describe what happens to oxygen during external respiration. Which structures does it cross? -95 b) Ad

Explanation / Answer

11. B.

2. Respiratory epithelium is a type of ciliated epithelium which present at respiratory tract which are lined by pseudostratified columnar epithelial tissue, which is ciliated and which includes mucus-secreting goblet cells and the main purpose is to moisten and protect the airways.

The mucus secreting globlet cells forms the mucociliary escalator which is a major barrier against infection caused by microorganisms infects the respiratory tract.

Those microorganisms will caught in that sticky mucus and moved up by the mucociliary escalator.

STAGE OF RESPRATION

DESCRIPTION

Ventilation

Also known as Breathing and it is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide.

External respiration

It occurs in the lungs where oxygen diffuses into the blood and carbon dioxide diffuses into the alveolar air.

Transport

It occurs in Lungs and for the exchange of oxygen and carbon dioxide to occur, both gases must be transported between the external and internal respiration sites.

Internal respiration

It occurs in the metabolizing tissues, where oxygen diffuses out of the blood and carbon dioxide diffuses out of the cells.

Cellular respiration

In this oxygen taken in by the respiratory system (Mitochondria) has to be transported to the cells of the body by the circulatory system

1.During ventilation oxygen comes from lungs and

Air passes between the lungs and the outside of the body through the windpipe, called the trachea.

2. External occurs in the lungs where oxygen diffuses into the blood and carbon dioxide diffuses into the alveolar air