ACTIVITIES UNIT 3: THE DIGESTIVE AND THE RESPIRATORY SYSTEMS.-

  1. Match the systems to the definitions:

a)Respiratory1. Processer foods so they can be ……………………………… distribute to cells

b)Digestive2. Carries oxygen, nutrients and waste …………………………… products

c)Excretory3. Captures oxygen for cells and eliminates CO2

d)Circulatory4. Expels waste products

  1. Answer the following question:

a)Where does star the digestive tract?

b)Where does end the digestive tract?

  1. What processes helps to the digestion?
  2. Draw a tooth and mark the name of different parts.
  3. Describe the functions of the tongue.
  4. Complete the sentences with the following words: cut, crush tear

a)Incisors are used to food

b)Canines are used to food

c)Premolars and molars and used to food

  1. Copy and complete the table with the corresponding nouns:

VerbNoun

Digest

Insalivate

Masticate

Swallow

  1. Name the parts of the small intestine
  2. Which enzymes play a role in the digestion of proteins and where do they come from?
  3. What is absorption?
  4. Which organ is responsible fro the following functions?

a)Water absorption

b)Formation of chime

c)Formation of chyle

  1. Where are the intestinal villi?
  2. Name the three parts of the large intestine
  3. Complete:

a)An organ shared by the digestive and respiratory systems

b)This connects the stomach to the duodenum

c)Part of the intestine immediately before the rectum

d)Secretion which helps to form the food bolus

e)An enzyme produced by the stomach

  1. What does the respiratory system do?
  2. Which gases does the respiratory system use?
  3. Into which organs does air pass immediately after leaving the nasal cavity?
  4. Match the words to the definitions:

a)Pleura1. Two elastic sponge-like organs

b)Lungs2. Membranes that surround the lungs

c)Nasal cavity3. A short tube with C-shaped rings of cartilage

d)Pharynx4. A flap or tissue that closes over the larynx

e)Trachea5. The place the air enters our body

f)Bronchi6. Part of these lead to our lungs

g)Bronchi7. Part of the digestive and respiratory system

  1. Choose the correct word in each sentence:

a)The lungs/bronchi are two highly-elastic sponge-like organs

b)The pleurae are two glands/membranes separated by a fluid layer.

c)After passing through the airways, air reaches the nasal cavity/pulmonary alveoli.

  1. Order the following words a say which system they are:

a)Oesophagus, small intestine, stomach, large intestine, pharynx, mouth, ileum, duodenum, jejunum, colon, rectum, caecum.

b)Bronchi, trachea, nasal cavity, lung, larynx, bronchioles, pharynx, pulmonary alveoli.

  1. Try to define:

a)Pulmonary ventilation

b)Gas exchange

c)Inspiration

d)Expiration