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Anvisha [2.4K]
4 years ago
5

A professor is teaching a class anatomy and physiology and mentions that closure of the airway occurs at anatomically different

locations and functionally separate levels in the larynx. a student in the class answers that the appropriate choice would be
Biology
1 answer:
svlad2 [7]4 years ago
6 0
The respiratory system, functionally, can be separated in two zones namely the conducting zone (nose to bronchioles) form a path for conduction of the inhaled gases and respiratory zone (alveolar duct to alveoli) where the gas exchange takes place. Anatomically, respiratory tract is divided into upper (organ outside thorax-nose,pharynx and larynx) and lower respiratory tract (organ within thorax-trachea, bronchi, bronchioles, alveolar duct and alveoli). Airway closure is a normal phenomenon in the body, with reopening of airways during the succeeding inspiration.

The appropriate choice would be the supraglottic portion of the laryngeal vestibule. It is the portion of the cavity of the larynx above the vocal cords. It is wide and triangular in shape, it is inlet to another cavity in the lateral wall of larynx, the laryngeal ventricle.
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Mom is A+. She has 2 children, one is O+ and the other is B-. (Note: Rh+ is RR or Rr, and Rh- is rr) What are the father’s possi
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Answer:

  • The blood group of the father must be B.
  • The genotype of blood group would be I^{B}i.
  • The Rh factor of the father can either be positive or negative.
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Rh factor:

The phenotype of the mother Rh factor is positive. Thus, she can have Rr or RR as her genotype as positive is a dominant trait.

If the genotype of the mother is RR then all the offspring would be positive for Rh factor. However, one of the offspring is Rh negative, that means the mother must be heterozygous that is, Rr.

The genotype of the father can either be Rr or rr in order to produce offspring with positive as well as negative Rh.

Blood group:

The blood group of the mother is A. Thus, the genotype can either be I^{A}I^{A} or I^{A}i.

However, the blood groups of the children are O+ and B+.

Thus, the genotype of the mother must be heterozygous that is I^{A}i.

The blood group of the father must be B with genotype I^{B}i in order to produce offspring with blood group O and B.

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