Oral Cavity

Q.

Write 5 functions of saliva.

Q. Mastication is the process of _______________________.

1. chewing of food and mixing of saliva with the help of tongue and teeth
2. none of the above
3. mixing of saliva with food only
4. chewing of food only

Q. The tongue is attached to the floor of the oral cavity by

1. frenulum
2. palatine tonsils
3. sphenoid
4. pterygoid

Q.

How is nitrogenous waste excreted through saliva? ( As given in NCERT)

Q. Select the incorrect statements
A. Alimentary canal begins with the opening called mouth
B. Tooth is embedded in a socket of mandible bone only
C. All human teeth show strict diphyodont type of dentition
D. Pharynx opens posteriorly into the oesophagus and larynx

1. B and C
2. A, B, C and D
3. A, C and D
4. A, B and D

Q. Which one of the following food components in humans reaches the stomach totally undigested?
(i) Protein
(ii) Starch
(iii) Cellulose
(iv) Fat

1. i, ii, and iii
2. i, ii, iii, and iv
3. ii, iii, and iv
4. i, iii, and iv

Q.

The hardest part of the human body is

1. Tooth enamel

2. Femur

3. Temporal bone

4. Knee bone

Q. The anterior portion of the roof of the buccal cavity is called ______________.

1. hard palate
2. soft palate
3. none of the above
4. rugae and uvula

Q. Transverse rugae are present in_______________

1. hard palate
2. soft palate
3. tongue
4. epiglottis

Q. The space between gums and lips is called__________

1. lingual frenulum
2. uvula
3. epiglottis
4. oral vestibule

Q. The hardest constituent of teeth is

1. none of the above
2. pulp
3. enamel
4. dentine

Q. Which of the following layers in an antral follicle is acellular?

1. Granulosa
2. Zona pellucida
3. Stroma
4. Theca interna

Q. ______________consists of a group of lymphoid organs and acts as the first line of defence against the microbes entering through the oral and nasal passage.

1. Pharynx
2. Waldeyer’s ring
3. Mouth
4. Oesophagus

Q. Digestion of food begins in the

1. stomach
2. small intestine
3. mouth
4. large intestine

Q. What are the secretions of Goblet cells?

Q. Name the glands associated with digestion of starch in human digestive tract and mention their role.

Q. The following list describes four major digestive enzymes. Which one of the following is incorrect?

1. Nuclease - Small intestine – Stomach
2. Lipase - Pancreas - Small intestine
3. Pepsin - Gastric glands - Stomach
4. Salivary amylase - Salivary glands – Mouth

Q. Mastication is the process of _______________________.

1. mixing of saliva with food only
2. chewing of food only
3. chewing of food and mixing of saliva with the help of tongue and teeth
4. none of the above

Q. Explain the role of saliva and juice in the process of digestion?

Q. A morula can be differentiated from blastula in

1. Presence of cavity
   
2. Absence of cavity
   
3. Presence of more yolk
   
4. Presence of yolk
   

Q.

Enzyme X extracted from the digestive system hydrolyses peptide bonds. Which of the following are probable candidate to be enzyme X?

1. Amylase

2. Lipase

3. Trypsin

4. Maltase

Q.

Give reasons for the following.
Digestion of food begins in the mouth.

Q.

The only freshwater organism in phylum Cnidaria is ________.

Q. How many structures are found in abdominal cavity of male among following structures. Epididymis, Rate testis, Ampulla of vas deferens, Fallopian tube, Prostate gland, Seminal vesicle, Round ligament, Ureter, Membranous urethra.

1. $2$
2. $3$
3. $4$
4. $5$

Q. Cells secreting dentine are called:

1. Osteoblasts
2. Calcoblasts
3. Chondriocytes
4. Odontoblasts

Q. Digestion of carbohydrates, proteins and fats completes in

1. Stomach
2. Liver
3. Small intestine
4. Large intestine

Q. All digestive enzymes are:

1. Ligases
2. oxidases
3. hydrolases
4. transferases

Q. Pulp cavity of teeth is lined by

1. Odontoblasts
2. Chondroblasts
3. Osteoblasts
4. Ameloblasts

Q. Name the types of teeth and salivary glands found in humans.

Q. Pulp cavity of teeth is lined by

1. Odontoblasts
2. Chondroblasts
3. Osteoblasts
4. Ameloblasts