Post-lab quizzes Mastering Ar POST-LAB Assignments La Date: Name PART I. Check Y

Question

Post-lab quizzes Mastering Ar POST-LAB Assignments La Date: Name PART I. Check Your Knowledge Activity 1: Examining Epithelial Tissue 1. Which specific epithelial tissue type a. has the ability to tretchitansi fional b. lines the stomach? epithelia rcolumrar) Sn c. forms the air sacs of the lungs? uamous Smns d. lines the esophagus? StrortaBed e. forms the epidermis? f. lines the trachea? g. is found in kidney tubules? Cloe Squ tratifiool shuamo 2. How is each of the following epithelial tissue types adapted to its function(s)? a. ciliated, pseudostratified columnar epithelium b. keratinized, stratified squamous epithelium c. simple squamous epithelium

Explanation / Answer

1.

a. Transitional epithelium.

It is present in organs like urinary bladder and due to this urinary bladder can store urine by increasing its size.

b. Simple columnar epithelium

This epithelium increase rate of absorption and secretion from the stomach wall.

c. Simple squamous epithelium

Air sacs or alveoli exchange gas with blood vessels around them and for this function simple squamous epithelium ia present as it is thin.

d. Stratified squamous epithelium

This provides protection to the esophagus wall

e. Stratified squamous epithelium

It has protective function. It is keratinized in skin.

f. Ciliated pseudostratified columnar epithelium

It helps in filtering of air which enters the respiratory tract. Goblet cells are also present in them which secrete mucus to catch the debris.

g. Simple cuboidal epithelium

It helps in filtering of urine

2.

a. The ciliated, pseudostratified columnar cells provide advantages in structures like trachea. They help to filter the air which enters the respiratory tract. The cilia by its movement stopa movement of foreign material. Goblet cells are also present in this epithelium which secrete thick mucus which can trap. The debris and prevent it from going further in the respiratory tract.

b. Keratinized stratified squamous epithelium is present in the epidermis of skin. The uppermost layer of this epithelium has keratinized cells which are dead and also contains keratin. This provides protection to the skin and is a waterproof layer.

c. Simple squamous epithelium is present in kidney tubules or alveoli where a thin epithelium is required for easy passage of the substances. In kidney they help in filtration and in alveoli it helps in exchange of gases with the blood vessels.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.