Answer:
tunica intima (inner layer)
Explanation:
Walls of veins is composed of three layers, which are:
- A. Outer layer (tunica adventitia) is of connective tissue with the collagen fibers.
- B. Middle layer (tunica media) is of smooth muscle which are arranged circularly and the elastic fibers.
- <u>C.Inner layer (tunica intima) which consists of specialized simple squamous epithelium which are also known endothelium which lines all the blood vessels and endocardium of heart.</u>
Answer: b. cricoid cartilage.
Explanation:
The larynx cavity extends from the triangle shaped inlet that is called as the epiglottis which opens to the circular outlet that is called as circoid cartilage at the lower border. The circoid cartilage forms continuity with that of the lumen of the trachea. The mucous membrane which provides the lining to the larynx forms two pairs of the lateral folds that opens inward inside the cavity.
Tough answer
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