Tag: windows of knowledge

Quizzes (13) Questions (83)

Questions Related to windows of knowledge

Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

Which of the following is the function of taste receptors?

  1. Identify toxins

  2. Enhance the diet

  3. Maintain nutrition

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The sense of taste is stimulated when nutrients or other chemical compounds activate specialized receptor cells within the oral cavity.
  •  Taste helps us decide what to eat and influences how efficiently we digest these foods. 
  • They would have used their sense of taste to identify nutritious food items. Hence,  the function of taste receptors is to Enhance the diet.
So, the correct answer is to 'Enhance the diet'.

Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

Which of the following can be detected with the combination of the 5 taste perceptions (salty, sour, bitter, sweet and umami)?

  1. Nutritions

  2. Spices

  3. Flavours

  4. Food
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Tongue consist of taste buds. Each taste bud contains 50 to 100 taste receptor cells.  
  • The sensation of taste includes five established basic flavours: sweetness, sourness, saltiness, bitterness, and umami. Hence, Flavours can be detected with the combination of the 5 taste perceptions (salty, sour, bitter, sweet and umami).
    • So, the correct answer is 'Flavours'.
Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

Which of the following helps in sensation of taste?

  1. Taste receptors

  2. Olfactory receptors

  3. Auditory receptors

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

  • A taste receptor is a type of receptor which facilitates the sensation of taste. These receptors are of four types.
  •  When food or other substances enter the mouth, molecules interact with saliva and are bound to taste receptors in the oral cavity and other locations. Hence, Taste receptors help in the sensation of taste.
So, the correct answer is 'Taste receptors'.


Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

Taste receptors are present over 

  1. Taste buds

  2. Membrane

  3. Dermis

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Specific chemicals in solution pass into the taste bud through the taste pore to come in contact with the protein receptor sites on the microvilli of the gustatory receptor cells. The latter set up nerve impulses in the sensory nerve fibres. The nerve fibres transmit the impulses to the taste centre in the brain where the sensation of taste arises. The facial nerve serves the anterior two-thirds of the tongue, the glossopharyngeal nerve serves the posterior one-third of the tongue. Sweet taste is on the tip of the tongue, salt taste is on the sides and tips of the tongue, sour taste is on the sides of the tongue and bitter taste is on the base of the tongue. Therefore, the taste receptors are present over the taste buds for the sensation.
So, the correct answer is 'Taste buds'.
Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

How may neurosensory cells be present in each taste buds?

  1. 1

  2. 2- 4

  3. 5- 15

  4. 20- 30
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are small elevated cells in the tongue which are called as the taste buds. There are the receptor or the neurosensory cells in these taste buds. There are about 5-15 neurosensory cells in each taste bud. There are cilia-like structures on one end and there are nerve fibres which extend from the other end to the brain. There are taste buds for the detection of different type of taste like sweet, sour, bitter, etc.

Thus, the correct answer is option C. 

Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

The ............ muscles of the tongue are not attached to the bone.

  1. Extrinsic

  2. Intrinsic

  3. Posterior

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

The eight muscles of the human tongue are classified as either intrinsic or extrinsic. The four intrinsic muscles act to change the shape of the tongue and are not attached to any bone. The four extrinsic muscles act to change the position of the tongue and are anchored to bone. Therefore, the correct answer is option B.

Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

Taste buds detect the substance only when the substance is

  1. Solid

  2. Semisolid

  3. Semiliquid

  4. Liquid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Taste buds are the taste receptors that are present on the surface of tongue in small projections called as papillae. Saliva of mouth dissolves the food and turns it into liquid or small solid molecules suspended in liquid. The liquid food enters the small pores of taste buds and stimulates the taste receptors to release chemicals and generate a nerve impulse. Since only liquid food can enter the small openings or pores of taste buds, taste buds can detect the substances present in the liquid state. 

Since solid, semi-solid and semi-liquid substances can’t enter the small openings of taste buds, they are not being detected. 
Therefore, the correct answer is option D.

Multiple choice biology windows of knowledge human tongue organ of taste tongue : the organ of taste

Human tongue can distinguish only among .......... distinct qualities of taste.

  1. Five

  2. Two

  3. Three

  4. Four
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In human beings tongue helps in the ingestion, chewing and swallowing of the food. The anterior part of tongue perceives sweet taste, posterior part bitter, lateral sides sour, and the sides just behind the tip of the tongue perceive salty taste. Thus option D is the correct answer.