Which blood vessel wall layer is correctly matched with the description about its tissue structure?

Tunica externa (adventitia) - consists of smooth muscle tissue

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Tunica interna (intima) - consists of only a thin layer of connective tissue

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Tunica media - consists of simple squamous epithelium

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Tunica media - consists of smooth muscle and elastic connective tissue, the amounts and proportions of each depending on vessel type

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Solution

The correct option is D
Tunica media - consists of smooth muscle and elastic connective tissue, the amounts and proportions of each depending on vessel type

The tunica media is the middle layer of an artery or vein. It lies between the tunica intima on the inside and the tunica externa on the outside.The tunica media, or middle coat, is made up principally of smooth (involuntary) muscle cells and elastic connective tissues arranged in roughly spiral layers.It has the autonomic control of which can alter the diameter of the vessel and affect the blood pressure.

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Q. Match the terms to these definitions.
adipose tissue, blood, cardiac muscle, compact bone, connective tissue, endocrine gland, epidermis, epithelial tissue, exocrine gland, fibroblast, homeostasis, lacuna, ligament, organ system, skeletal muscle, spongy bone, tendon tissue, nervous tissue, striated muscle.
.......... Outer region of the skin composed of stratified squamous epithelium.

Match the column (A) with the column (B) [3 MARKS]

$\begin{matrix} (A) & (B) (a) Fluid connective tissue & (i) Subcutaneous layer (b) Filling of space inside the organs & (ii) Cartilage (c) Straited muscle & (iii) Skeletal muscle (d) Adipose tissue & (iv) Areolar tissue (e) Surface of joints & (v) Blood (f) Stratified squamous epithelium & (vi) Skin \end{matrix}$

Read the following statements regarding different types of animals tissues and select the incorrect ones.
(i) Each fasciculus (or bundle of muscle fibres) is surrounded by an epithelial tissue covering called perimysium
(ii) Multi unit smooth muscles are present in ciliary and iris muscles in the eyes and muscles of the walls of large blood vessels.
(iii) Columnar epithelium present in gastric glands, intestinal glands and pancreatic lobules, has a secretory role and is called as glandular epithelium.
(iv) Epithelial tissue arises only from the ectoderm of embryo and is usually supplied with blood vessels

Distinguish between

(a) Simple epithelium and compound epithelium.

(b) Cardiac muscle and striated muscle

(d) Adipose and blood tissue

(e) Simple gland and compound gland

What does the fluid connective tissue consists of?

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