Unit 1: Tissues

Question 1

Tissue

Answer 1

A group of cells that are similar in structure and specialisation that work together to carry out a particular task/function.

Question 2

Types of tissue

Answer 2

• Epithelial
• Muscular
• Connective
• Nervous

Question 3

Epithelial tissue

Answer 3

A covering or lining tissue.
* Organs including the heart, kidneys, intestines, liver, lungs, and skin are covered in epithelial tissue (on the outside).
* It also lines the inside of organs, so the inner layer of hollow organs (including the heart, stomach, and intestines) is made up of epithelium.
* The cells that make up epithelium fit very closely together, forming a smooth surface.

Question 4

Connective tissue

Answer 4

Provides support for the body and helps to hold all the body parts together.
* Cells are not close together like epithelium. They are separated by non-cellular material called matrix.
* Includes bone, cartilage, tendons, ligaments, and fat storage (adipose).
* Blood is sometimes considered as connective tissue (the matrix is the liquid in which it is suspended).

Question 5

Muscular tissue

Describe and list the different types

Answer 5

• Muscle fibres (the cells of muscular tissue) are long and thin and can contract to become shorter.
• Skeletal muscle
• Smooth muscle
• Cardiac muscle

Question 6

Skeletal muscle

Answer 6

Makes up the muscles attached to bones
* We have voluntary control over these muscles - they are also called ‘voluntary muscle’
* They have stripes, so are also known as ‘striated muscle’