Atelectasis: Atelectasis is a complete or partial collapse of the entire lung or area of the lung. It occurs when the tiny air sacs (alveoli) within the lung become deflated or possibly filled with alveolar fluid. . General anesthesia is a common cause of atelectasis. It changes your regular pattern of breathing and affects the exchange of lung gases, which can cause the air sacs (alveoli) to deflate.
Conditions when atelectasis occurs: There are four primary causes of atelectasis: hypoventilation, airway obstruction, airway compression, and adhesions.
Hypoventilation
Hypoventilation, or breathing at an abnormally slow rate, is common during surgery, especially with general anesthesia, or when a person is placed on a respirator. The very act of shallow breathing prevents air from getting to the alveoli, causing the air sacs to deflate and collapse.
Airway Obstruction
Airway obstruction may be caused when something blocks a passage either inside the lung (like a mucus plug or a foreign object) or outside of the lungs (like a tumor which presses on the airway and causes obstruction).
Airway Compression
Compression of the airways is often caused by the buildup of fluid in the space surrounding the lungs.
Answer:
I think it is C
Explanation:
Amino acids have various prominent functions in plants. Besides their usage during protein biosynthesis, they also represent building blocks for several other biosynthesis pathways and play pivotal roles during signaling processes as well as in plant stress response
Answer:
C. a cat
Explanation:
only animals have centrosomes.
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The given question is incomplete as the option are not provided however, the correct options are as follows:
Defective proteins are often degraded quickly, making their effects temporary.
Single amino acid substitutions caused by errors in mRNA transcription would not affect protein function.
Unlike DNA mutations, mRNA transcripts have short half-lives and are not inherited across many generations.
Degradation of defective proteins activates mRNA repair pathways RNA polymerases synthesize many transcripts per gene, so only a small fraction of RNA transcripts would have errors.
ch mRNA molecule is only translated once and then degraded
Answer:
The correct answer is - statements 1, 3, and 4.
Explanation:
DNA polymerase is the enzyme that is responsible for the production of the new DNA molecule and any mutation in this enzyme that will inhibit the DNA repair process which affects future generations.
RNA polymerase is an enzyme that is responsible for the transcription of DNA to mRNA and any error-prone mRNAs have chances of degradation. Error in DNA replication is from generation to generation as it is inherited
The process of transcription is quick.
A wet gangrene is a medical condition that occurs whenever injury from burns or trauma from a body part is crushed or squeezed which rapidly cuts off blood supply to the affected area causing tissue death and increased the risk of infection. It is called wet because of the pus that is formed. Wet gangrene infection can spread quickly throughout the body and cause life-threatening conditions if not treated quickly,
Gangrene is a condition that occurs whenever body tissues die. It primarily caused by a loss of blood supply due to an illness, infection or injury. Oftentimes, this medical condition occurs in the fingers and limbs. They, however, can occur inside the human body damaging organs and muscles.
