Advertisements
Advertisements
Question
Observe the diagram given alongside and answer the following:
- Name the parts numbered 1-8.
- Which parts shown in the diagram are non-living?
- Is the tooth suited for cutting, tearing or grinding?
- What is the function of parts 8 and 7?
- What is the total number of teeth present in adult human beings?
- Write the dental formula of human beings.
Advertisements
Solution
- 1. Enamel; 2. Dentine; 3. Blood capillaries; 4. Cement; 5. Blood vessels; 6. Periodontal membrane; 7. crown and 8. root.
- Enamel, dentine and cement
- Yes
- The function of the root is to hold the teeth in the jaw and the function of the crown is it completely encircles and protects the teeth.
- 32
- The dental formula of humans is 12/2, C 1/1, P 2/2, M 3/3 (16x2= 32).
APPEARS IN
RELATED QUESTIONS
The stomach releases hydrochloric acid and ______ juices which act on food.
Which part of the digestive canal is involved in:
Chewing of food ______.
Which of the organs perform the functions in humans Absorption of food?
What substance is mixed with food in the mouth during chewing by the teeth?
How do carbohydrates, fats and proteins get digested in human beings?
What is the dental formula of a normal human adult?
Prepare a possible vegetarian menu for your dinner which would provide all the necessary nutrients.
What are the main characteristics of enzyme?
Give two reasons to explain why the absorption of digested food occurs mainly in the small intestine.
Fill in the blank.
Molars are meant for _____ the food.
Write true or false for the below statement. Rewrite the false statements correctly.
The removal of faeces through the anus is called excretion.
Answer in detail.
What happens to the nutrients absorbed in the bloodstream from the small intestine?
Define with examples: Heterotrophs
State whether the following statements are True or false: Pancreatic amylase digests protein into amino acids.
State whether the following statements are True or false: Na+ is absorbed in intestine by sodium pump.
Describe the following: Digestion of fat in the intestine
The question has four options. Choose the correct answer:
The organ that stores bile is
Write down the explanation.
Explain the structure of tooth.
List the glands associated with digestion.
In which of the following groups of organisms, food material is broken down outside the body and absorbed?
