Cells and Tissues

Question 1

Cell

Answer 1

The structural, functional and biological unit of all organisms

Question 2

Tissue

Answer 2

A group of similar cells, functioning together to perform a specialised activity

Question 3

Epithelial Tissue

Answer 3

Covers body surfaces or tissues, lines body cavities and forms glands

Question 4

Connective Tissue

Answer 4

Protects and supports the body and the organs and binds organs together

Question 5

Muscular Tissue

Answer 5

Is responsible for movement

Question 6

Nervous Tissue

Answer 6

Produces and transmits nerve impulses that control body activities

Question 7

Skeletal Muscle

Answer 7

• Voluntary movement
• Attached to various bones of skeleton
• Cells long and cylindrical
• Multinucleated
• 50% body overall weight
• contracts rapidly and strongly but liable to fatigue

Question 8

Smooth Muscle

Answer 8

• Involuntary
• Visceral
• non-stripped
• Found in ducts, digestive tube, blood vessels, urinary bladder
• one nuclei
• helps movement of food and blood
• contraction slow
• doesn’t tire

Question 9

Cardiac Muscle

Answer 9

• striated (not as dark as skeletal)
• only found in heart
• involuntary
• one nuclei
• one cell is connected to the other INTERCALATED DISCS
• provide strength
• assist in passage of nerve impulses
• never tires
• requires 02

Question 10

Excitability

Answer 10

responds to stimuli

Question 11

Conductivity

Answer 11

conduct or transmits electrical/nerve impulses

Question 12

Low power

Answer 12

10x4=40

Question 13

Medium power

Answer 13

10x10=100

Question 14

High power

Answer 14

10x40=400

Question 15

As the objective power increases the field of view…..

Answer 15

decreases

Question 16

Low power > high power magnification

Answer 16

LP MAG = 150
HP MAG = 600 (4x)
LP FOV = 2000um
HP FOV = 2000/4=500
Object fits 6x HP FOV
500/6=83.3um
0.083mm