Tag: role of receptors in the mouth

Quizzes (0) Questions (101)

Questions Related to role of receptors in the mouth

Multiple choice biology structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Cavity present in the tooth is called as

  1. Pulp cavity

  2. Nasal cavity

  3. Abdominal cavity

  4. Chest cavity
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pulp cavity is the central cavity of a tooth containing the dental pulp and being made up of the root canal and the pulp chamber. Nasal cavity is present in nose, abdominal cavity in abdomen and chest cavity in chest.

Therefore, the correct answer is option A.

Multiple choice biology structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

The study of teeth is called as

  1. Dentistry

  2. Dermatology

  3. Neurology

  4. Cardiology
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The study of teeth generally referred to as dentistry. It is a branch of medicine that involves the study, diagnosis, prevention, and treatment of diseases, disorders and conditions of the dentition along with oral cavity, including the oral mucosa, and the adjacent and related structures and tissues of the maxillofacial zone.

Multiple choice biology structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

We chew the food with the

  1. Teeth

  2. Tongue

  3. Mouth

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Mastication or chewing is the process by which food is crushed and ground by teeth. It is the first step of digestion, and it increases the surface area of foods to allow more efficient break down by enzymes. During the mastication process, the food is positioned by the cheek and tongue between the teeth for grinding. The muscles of mastication move the jaws to bring the teeth into intermittent contact, repeatedly occluding and opening. As chewing continues, the food is made softer and warmer, and the enzymes in saliva begin to break down carbohydrates in the food. After chewing, the food (now called a bolus) is swallowed. It enters the esophagus and via peristalsis continues on to the stomach, where the next step of digestion occurs.
Multiple choice biology structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Match the following.

A. Incisors 1. Grinding teeth
B. Canines 2. Cracking teeth
C. Premolars 3. Cutting teeth
D. Molars 4. Tearing teeth

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

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

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

  4. A- 3, B- 4, C- 2, D- 1
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Incisor is a narrow-edged tooth at the front of the mouth, adapted for cutting. In humans there are four incisors in each jaw. On each side of the incisors, at the corners of the mouth, are the canines. These teeth have one cusp, or pointed edge, and are used for holding or grasping food, and are very strong, stable teeth. Behind the canines are the premolars, which are designed for holding food like the canines because they have cusps, but they also function to crush food. Sometimes these teeth are referred to as bicuspids, meaning two cusps, but this is not always accurate because some premolars may have three cusps. Therefore, the term premolar is preferred. The teeth farthest back in the mouth are the molars. These teeth have broad chewing surfaces with four or five cusps, and are designed for grinding food. Thus, option D is correct.

Multiple choice evs structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

Calcium and ............. gives rigidity to bones and teeth 

  1. Oxalate

  2. Pectate

  3. Carbonate

  4. Phosphate

  5. Sulphate
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Phosphorus is found within the skeleton and teeth, where it is compounded with calcium to form calcium phosphate.  It is a primarily component of hydroxyapatite crystals in bones and teeth, and help in rigidity to the softer portions. 
So the correct answer is D.
Multiple choice evs structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

The number of teeth that grow twice in human life is 

  1. 4

  2. 12

  3. 20

  4. 28
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

20 milk teeth of a child get replaced in adulthood by 20 permanent teeth. But the rest 12 can never be replaced if broken, these 12 teeth grow only once in a man’s life.
So, the correct option is '20'.
Multiple choice evs structure and functions of living organisms -ii role of receptors in the mouth types of teeth introduction to human digestive system circulatory system and organs

The primary dentition in human differs from permanent dentition in not having one of the following type of teeth

  1. Canine

  2. Premolars

  3. Molars

  4. Incisors
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

There are 20 primary teeth which are lost as the child grows and is replaced by 32 permanent teeth. Primary dentition comprises of 8 incisors, 4 canines and 8 molars while permanent teeth comprises of 8 premolars in addition to newly formed 8 incisors, 4 canines and 12 molars. Premolars take the place of molars present in the primary dentition.

Multiple choice biology structure and functions of living organisms -ii role of receptors in the mouth types of teeth circulatory system and organs

Consider the following statements each with two blanks.
(A) Seminiferous tubules produce (i) while Leydig's cells produce (ii).
(B) In females, urethra is small and conducts (iii) while in males it conducts urine and (iv).
(C) The process Of formation of spermatozoa from spermatogonia is called (v) and the process of maturation of spermatids into spermatozoa is called (vi).
Which one of the following options, gives the correct fill ups for the respective blank numbers from (i) to (vi) in the statements?

  1. (i)-spermatozoa, (ii)-testosterone,

    (v)-spermatogenesis, (vi)-spermiogenesis

  2. (i)-testosterone, (ii)-spermatozoa, (iii)-urine, (iv)-semen

  3. (i)-estrogen, (ii)-testosterone, (v)-spermiogenesis, (vi)-spermatogenesis

  4. (iii)-urine, (iv)-semen, (v)-spermiogenesis, (vi)-spermatogenesis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The seminiferous tubules are the location of the production of spermatozoa or sperms in the testicular lobule. The Leydig cells (interstitial cells) outside the seminiferous tubule synthesize and secrete testicular hormones called androgens or testosterone. Spermatogenesis is the process of immature male germ cells (spermatogonia) develop into mature sperms or spermatozoa. After this process, the conversion of the four equal haploid spermatids into spermatozoa (sperms) is called spermiogenesis. 

So, the correct option is '(i)-spermatozoa, (ii)-testosterone, (v)-spermatogenesis, (vi)-spermiogenesis'.

Multiple choice biology structure and functions of living organisms -ii role of receptors in the mouth types of teeth circulatory system and organs

In frogs, body proportions do not change with their growth. A frog  that is twice as long as another will be  heavier by approximately ?

  1. Two-fold

  2. Six-fold

  3. Four-fold

  4. Eight-fold
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In frogs, body proportions do not change with their growth. This means that the weight and height of a frog increase and decrease proportionately. If one of these parameters increase, so does the other, and by the same proportion, and vice-versa. Hence, if a frog is twice as long as another, it will be approximately two times heavier also.

So, the correct answer is 'Two-fold'.

Multiple choice biology structure and functions of living organisms -ii role of receptors in the mouth types of teeth circulatory system and organs

The graph of electrical activity of heart versus time produced by non-invasive medical procedure is called 

  1. Electro - cardiograph

  2. Electro - encephalograph

  3. Electro - cardiogram

  4. Electro - cardiography
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The graph of electrical activity of heart versus time produced by non-invasive medical procedure is called electrocardiograph. The process of recording the electrical activity of heart over a period of time is called as electrocardiography (ECG). The graph of electrical activity of brain versus time is called as electroencephalograph. The machine used to record the electrical activity of heart is called as electrocardiogram.

Thus, the correct answer is 'Electro - cardiograph.'