Unit 4 - Eye and respiratory

Match the following eye structures with their functions:

• cornea

• Where nearly all of your colour cells are, gives the best quality vision

• optic nerve

• Sends information from the retina to your brain

• conjunctiva

• Keeps the cornea moist

• retina

• Transparent to let light in to the eye

• fovea

• Where the light detecting cells are found

Identify the eye structure for label no. 7

a

Optic nerve

retina

macula

It controls accommodation for viewing objects at varying distances 

• pupil

• suspensory ligament

• lens

• Ciliary muscle

Label the diagram of the eye

a

b

c

d

Iris

Cornea

Lens

Pupil

Match the following eye disorders with the correct definition:

• Glaucoma

• a common eye condition where the optic nerve becomes damaged due to build-up of pressure by fluid in the eye.

• Retinopathy

• when the lens, a small transparent disc inside your eye, develops cloudy patches.

• Cataracts

• Blood vessels in the retina become bulged or leaking, damaging the retina

• Age-related macular disease

• condition that affects the middle part of your vision. It affects the retina layer of the eye.

Match the following eye conditions with the correct treatments:

• Retinopathy

• Lifestyle changes

  Regular eye injections directly into the eyes.

  "photodynamic therapy"

• Cataracts

• • Daily drops in the eyes is the most common treatment. 

  • Laser treatment to open up blocked drainage tubes or reduce the fluid production in the eye.  

  • Surgery to improve the drainage of fluid.

• AMD

• • surgery involves replacing the cloudy lens inside your eye with an artificial one.

• Glaucoma

• Good control of blood glucose levels

  • Laser eye surgery

  • Removal of scar tissue in the retina

Reorder the following sequence of how we see.

• Light enters the eye through the cornea

• The nerves of the retina collect the electrical impulses, which travel through the optic nerve to the occipital lobe in the back of the brain.

• The pupil changes size according to how much light is present

• The retina turns light into signals about images that the brain can understand.

Identify the parts of the respiratory system labeled in the diagram.

a

b

c

d

e

f

g

h

Larynx

Alveoli

Lungs

Trachea

Bronchi

Pharynx

Diaphragm

Nasal cavity

Match the following respiratory structures to the correct functions

• Alveoli

• a

  At the end of the tiniest Bronchioles, surrounded by a capillary network where oxygen and carbon dioxide are exchanged

• Trachea

• connects the back of the nose and the trachea, forming an air passage to the lungs. This is where your voice box is

• Diaphragm

• separates your trachea from your oesophagus and stops you breathing in food and drink

• Larynx

• known as the ‘windpipe’. It starts at the back of the throat

• Epiglottis

• • muscle anchored to the Lower Ribs that separates the Chest from the Abdomen.

• Cover outside of the lungs and line the inside of the Chest wall.

•  It consist of two layers of thin membrane. 

They are moist and slippery, having a thin film of liquid between the two layers, allowing the lungs to move easily within the Chest cavity. Select the correct structure:

• Bronchiole

• Pleural membrane

• Intercostal muscles

• Alveoli