UNIT 3 THE SYSTEMS OF NUTRITION 3ºESO
UNIT 3
SYSTEMS OF NUTRITION
1. DIGESTIVE SYSTEM
Objectives
· To learn about the anatomy of digestive system
· To learn about digestion
Vocabulary
Mouth. / Tongue. / Teeth.Pharynx. / Epiglottis. / Flap.
Oesophagus. / Peristaltic movements.
Stomach. / intestinal villi.
Anus. / Gland. / Liver.
Bile. / Pancreas. / Tract.
Break down. / mix. / Absorption.
Absorb. / Egestion. / Faeces.
Chew. / Swallow. / Gall bladder.
Saliva. / Intestine. / Capillary
Concepts
2.1. Anatomy of the digestive system (page 34).
2.2. Digestion (page 36).
Activities
1. What is the function of the digestion system?
______
2. Name the main important structures of digestive system.
3. Which organ does not belong to the digestive system?
1. Mouth
2. Stomach
3. Lungs
4. Oesophagus
4. One of the functions of the digestive system is:
1. Brake down food
2. Exchange oxygen
3. Pumb blood
4. Transport nutrients
5. I’m the entrance where the food enters the body. I chew up the food. What am I?
1. The stomach
2. The lungs
3. The small intestine
6. Some children call me the tummy. My job is to store the food you swallow, mix it with stomach acids, churn it up using the strong muscles in my walls and send it to the small intestine. I’m the
1. Large intestine
2. Small intestine
3. Stomach
4. Oesophagus
7. ’m very long. In adults I could be as long as 22 feet. My job is to push the food along while absorbing vitamins, minerals and other nutrients your body needs. What am I?
1. The large intestine
2. The small intestine
3. The leg
4. The oesophagus
8. What mashes and cuts food in your mouth?
1. The teeth
2. The saliva
3. The tongue
4. The lips
9. I am the tube that connects your throat (pharynx) with the stomach. My job is to push the food you swallow by squeezing the food with my muscular walls all the way down into the stomach. I’m the
1. The large intestine
2. The small intestine
3. The oesophagus
4. Stomach
10. Order these cards about digestion process in chronological order. Check your results watching the video. Afterwards, copy the processes.
1. ______
2. ______
3. ______
4. ______
5. ______
6. ______
7. ______
8. ______
9. ______
10. ______
11. ______
11. Watch the video about digestion and after complete the following chart:
Food / Enzyme / juice / organ / nutrientCarbohydrates
Proteins
Fats
Homework
1. Resume el apartado 2.2 del tema 3.
2. Do activities 1,2 and 3 from English book (page 34)
3. Do activities 5,6 y 7 from English book (page 36)
3.RESPIRATORY SYSTEM
Objectives
· To learn about the anatomy of respiratory system
· To learn about breathing mechanism.
Vocabulary
Airway / Bronchial tubeBreath / Bronchioles
Expel / Alveoli
Nasal passage / diaphragm
Lung / Exchange
Pharynx / Increase
Larynx / Inhalation
Trachea / Exhalation
Concepts
2.1. Anatomy of the respiratory system (page 38).
2.2. Breathing mechanism (39).
Activities
12. What is the function of the respiratory system?
______
13. In the following drawing, name the parts of the respiratory system
14. Complete this table about the parts of the respiratory system
Airways / Lungs15. Listen to John and complete the diagram about gas exchanges with these expressions
O2, CO2, [CO2] [O2] , [CO2] [O2], glucose + O2 Energía + CO2, cell, alveoli, air, cell respiration,circulatory system
16. Now, you write a short sentence in order to explain the breathing mechanism.
1. ______
2. ______
3. ______
4. ______
5. ______
6. ______
7. ______
8. ______
9. ______
Homework
1. Resume el apartado 3 del tema 3.
2. Complete the worksheet.
3. Do activities 1 and 3 from English book (page 39).
4. SISTEMA CIRCULATORIO
Objetivos
· Conocer la anatomía del aparato circulatorio
· Conocer la circulación menor o pulmonar
· Conocer la circulación mayor
Concepts
4.1. Blood (page 40).
4.2. The blood vessels (40).
4.3. The heart
4.4 Blood circulation
Activities
17. What is the function of Circulatory System?
______
18. Complete the following heart model.
19. Indicate whether the following sentences are true (T) or false (F).
1. The red blood cells defend the organism from infection.
2. The platelets intervene in blood coagulation.
3. The blood does not play a part in maintaining the temperature of the body.
4. The veins are vessels with thinner, more elastic walls than the capillaries.
5. The arteries branch off and form arterioles.
20. The following drawings show the different phases in the heart cycle.
1 2 3 4
a) Indicate the correct order.
......
b) Match the drawings above with the sentences that correspond to them.
1. The blood enters the dilated auricles, which fill completely.
2. The blood leaves through the arteries and the auricles dilate.
3. The auricles contract and the blood passes into the ventricles.
4. Once full, the ventricles contract.
......
21. Change, or add to, the following sentences so they are correct.
a) The blood rich in oxygen leaves the right ventricle.
......
b) The oxygenated blood leaves through the pulmonary arteries towards the lungs.
......
c) The different arteries branch into capillaries which distribute the blood poor in oxygen and waste products through all the organs.
......
......
22. Look at this diagram of the general circuit and explain the route oxygen-rich blood makes from when it leaves the left ventricle until it again returns to the hear
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1. Watch the video twice and answer the questions.
1) What is the Cardiovascular System?
______
2) What is the function of the heart?
______
3) What size has our heart?
______
4) Where is located the heart in our body?
______
5) What substances are carried by the blood?
______
6) How many chambers the heart has? ______
7) Their names are:
______
8) How is the blood circulation into the heart?
______
9) The right side of the heart receive:
· Oxygen poor blood from the lung
· Oxygen blood from the lung
· Oxygen poor blood from the body
· Oxygen blood from the body
10) How many valves has the heart got?______
11) What is the function of these valves?
______
12) What is the blood pressure?
______
13) What is the normal value of the systolic pressure? ______
14) What is the normal value of the diastolic pressure? ______
15) Name the main things that you can do to keep your heart healthy
______
2. How to measure your pulse.
1) Measure someone´s pulse at rest.
· Ask a classmate to sit down for 5 minutes and rest their elbow on the desk.
· Locate the radial artery with the second and third fingers of one hand and press slightly.
· Count the number of beats in 10 seconds
· Note down the result and multiply that number by 6 to obtain the heart beats per minute.
· After that time, take his or her pulse
2) Measure the pulse after doing physical exercise
· Ask a classmate to do 20 push-ups
· Take his or her pulse immediately and note down the result and multiply that number by 6 to obtain the heart beats per minute.
3) Compare the results obtained in activities 1 and 2 and explain what the pulse rate change when we do physical exercise.
TABLE TO TAKE NOTES
AT REST / AFTER PHYSICAL EXERCISEBeats in 10 seconds / Value…………. / Beats in 10 seconds / Value………….
Calculation beats/ minute / Value…………. / Calculation beats/ minute / Value………….
Observations
5. EXCRETORY SYSTEM
Objetives
· To learn about the excretion
Vocabulary
excretion / sweatfilter / kidney
nephron / ureter
urethra / bladder
residue / To flow
urine
Concepts
5.1. Excretory system (page 44).
5.2. Sweat glands (44).
Activities
23. What is the function of the excretory system?
______
24. Write the name of the parts indicated in the diagram.
25. Write de name of the parts indicated in the diagram
26. Explain how the nephron produces urine.
______
27. Complete these sentences.
a) In addition to the excretory system, other organs related to excretion are the
______the ______and the ______
b) The lungs carry out their excretory function by eliminating the ______
produced by cell activity.
b) The ______form sweat, whose composition is similar to that of ______
6. LYMPHATIC SYSTEM AND INTERNAL MEDIUM
Objetives
· To learn about the lymphatic system and internal medium
Vocabulary
Interstitial plasma / lymphswelling / propel
surplus / node
Concepts
6.1. Lymphatic system (page 46).
6.2. Internal medium (46).
Activities
28. Define:
a) Interstitial plasma:______
______
b) Lymph:______
______
c) Lymphatic node: ______
______
29. What are functions of lymphatic system?
______
30. Locate three parts in the body where there are lymphatic nodes.
______
31. Place the following letters in the drawing.
a) Blood plasma is filtered outside the capillary.
b) Interstitial plasma enters the lymphatic vessel.
c) The interstitial plasma enters the capillary.