Answer:
number 1 i believe is the righ answer
Answer:
C. Sex chromosomes
Explanation:
Sex chromosome is a type of chromosome that is responsible for the characteristics of an individual such as ️eye color, Hair type and ️child eye color. The sex of an individual i.e. male or female is also determined by sex chromosomes. Every individual has two pairs of chromosomes, one from father and one from mother. These pairs of genes determine certain physical features or traits in an individual.
Answer:
Lumen corresponds to the central opening of a vessel (option d).
Explanation:
From the biological point of view, lumen is the internal space of any structure or tubular organ, whose purpose is the conduction of substances through it.
In the case of blood vessels, the lumen is a central space covered by a simple epithelium, called the endothelium, which ensures the passage of blood in a fluid form.
The other options do not correspond to the answer:
<em> a. </em><u><em>Vessel that empties into the right atrium</em></u><em> is the vena cava</em>
<em> b. </em><u><em>Fibrous sac around the heart </em></u><em>is the pericardium.
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<em> c. </em><u><em>Structure that keeps fluid moving forward</em></u><em>, it is a blood vessel.
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<em> e. </em><u><em>Lower, pointed region of the heart</em></u><em>, corresponds to the cardiac apex.</em>
The answer is c most people look
