Structural Organisation in Animals: Epithelial Tissue

What is the main function of simple epithelium?

To provide protection to the body
To act as a lining for body cavities, ducts, and tubes (correct)
To connect bones and muscles
To facilitate the exchange of substances between the body and the environment

What is the characteristic of epithelial tissue that distinguishes it from other tissue types?

A lot of intercellular matrix
A protective function
A single layer of cells
A free surface facing a body fluid or the outside environment (correct)

What is the name of the epithelial tissue that consists of two or more cell layers?

Compound epithelium (correct)
Columnar epithelium
Simple epithelium
Squamous epithelium

How many types of simple epithelium are further classified based on structural modifications of the cells?

3 (D) Signup and view all the answers

What is the term used to refer to a single epithelial tissue?

Epithelium (C) Signup and view all the answers

What is the main function of tight junctions in epithelium?

To stop substances from leaking across a tissue (C) Signup and view all the answers

What type of junctions perform cementing and keep neighbouring cells together?

Adhering junctions (B) Signup and view all the answers

Where can compound epithelium be found in the body?

In the skin, buccal cavity, pharynx, and ducts of salivary and pancreatic glands (D) Signup and view all the answers

What is the main characteristic of cells in epithelium?

They have little intercellular material (C) Signup and view all the answers

What is the primary function of connective tissue?

To link and support other tissues and organs of the body (B) Signup and view all the answers

Where are connective tissues commonly found in the body?

In the bones, cartilage, adipose, and blood (A) Signup and view all the answers

What is the main function of muscle tissue in the body?

To move the body and maintain its position (C) Signup and view all the answers

What type of muscle tissue is closely attached to skeletal bones?

Skeletal muscle tissue (B) Signup and view all the answers

What is the composition of muscle fibers?

Numerous fine myofibrils (D) Signup and view all the answers

What is the term for the process of muscle fibers contracting and then returning to their uncontracted state?

Contraction and relaxation (B) Signup and view all the answers

How are skeletal muscle fibers arranged in a typical muscle like the biceps?

In a parallel fashion (D) Signup and view all the answers

What is the outer covering of muscle fibers made of?

Tough connective tissue (C) Signup and view all the answers

What is the main function of compound epithelium?

To provide protection against chemical and mechanical stresses (B) Signup and view all the answers

What type of epithelium are glands that secrete mucus, saliva, and earwax?

Exocrine (D) Signup and view all the answers

What is the function of isolated glandular cells in the alimentary canal?

To secrete digestive enzymes (D) Signup and view all the answers

What type of glands do not have ducts?

Endocrine (C) Signup and view all the answers

What is the role of fibroblasts in connective tissue?

To accumulate matrix (C) Signup and view all the answers

What type of epithelium is made of a single layer of cells?

Simple epithelium (D) Signup and view all the answers

What type of connective tissue is blood?

Fluid connective tissue (B) Signup and view all the answers

What is the main function of limb bones?

To interact with skeletal muscles to bring about movements (C) Signup and view all the answers

What is the ground substance of bones rich in?

Calcium salts and collagen fibers (C) Signup and view all the answers

What is the site of production of blood cells in some bones?

Bone marrow (D) Signup and view all the answers

What is the function of cartilage in adults?

To provide cushioning and support in joints and at the tip of nose (A) Signup and view all the answers

Where are the cells of cartilage tissue enclosed?

In small cavities within the matrix (A) Signup and view all the answers