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SIZIF [17.4K]
3 years ago
14

A group of students are reviewing the anatomy and physiology of the breasts. The students demonstrate understanding of breast st

ructure when they identify the tail of Spence as an extension of which quadrant?
Biology
1 answer:
KIM [24]3 years ago
8 0

Answer:

The upper lateral quadrant.

Explanation:

The breast is a glandular and fatty tissue that lies on the top of the pectoral muscles of the chest. It is made up of fatty tissues, glands, and connective tissue ligaments that attach it to the muscles.

The glands are the functional units as they are where the milk is produced. These glands are divided into 15 to 20 lobes of glands demarcated by fatty and connective tissues. Each lobe is made up of lobules where milk is produced. They are various ducts that carry the milk and they open up on the nipple.

The breast is usually divided into four imaginary quadrants during clinical examination. The upper lateral quadrant has an extension of breast tissues into the armpit. This is referred to as the Tail of Spence or axillary tail.

The tail of Spence has axillary lymph nodes around it and plays a key role in the diagnosis of breast cancer.

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Give one example of a bad mutation and one example of a good mutation.!
topjm [15]

Answer:

Bad mutation: deletion/addition mutation

Good mutation: silent mutation

Explanation:

Addition or deletion mutation results in the reading frame of codons to be changed, leading to a extensive missense mutation that will lead to a non-functional protein product to form.

Good mutation are silent mutations that leads to no change to the final product but causes codons to change in sequence. This increases genetic diversity in the gene pool that enables the species to be more resilient to environmental changes.

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3 years ago
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svetoff [14.1K]

Answer is 55%.

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The formed elements can be separated from plasma by centrifuge. On separation of blood components, it is evident that formed elements make up 45% of total blood volume while the plasma makes up 55% of the total volume.


6 0
3 years ago
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Fudgin [204]

ATP is produced when The energy from photons hitting photo system.

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