A patient with a loss of peripheral vision most likely has damage to the:

Iron is a vitally important element that is required for oxygen transport as a component of hemoglobin. Haemoglobin is composed of <u>two components; heme and globin chain</u>. Heme is further composed of two component; iron and porphyrin ring and globin is a protein chain. Heme part of the hemoglobin helps in binding oxygen component whereas globin chain helps in transport because it is soluble in body fluid. When <u>heme group breaks down it release iron</u> and phosphorus in the body fluid. Iron is obtained from dietary source.

The naturally occurring iron is formed in two forms; heme and non heme iron in food that are handled and absorbed by the human cell differently. Heme iron is a kind of <u>iron present in muscle tissue and blood.</u> The source of heme iron is meat, seafood, poultry and fish. It is generally present in the form of animal protein. Non heme protein is a plant as well as animal based iron. They are present in beans, grain, vegetables, fruits, seed, nuts, egg and milk. Heme iron is absorbed more easily in human body than non heme iron.

Biologically available heme can be calculated by the formula given below.

$\text{Biologically available}=\dfrac{\text{dietary intake}\times\text{absorption}}{100}$

The concentration of heme iron can be calculated by,

$\begin{aligned}{\text{Heme iron}}&=\frac{{3.3 \times 15}}{{100}}\\&=0.49{\text{ mg}}\end{aligned}$

Calculate the non heme concentration by,

$\begin{aligned}{\text{Non - heme iron}}&=\frac{{17.5\times5}}{{100}}\\&=0.875{\text{ mg}}\end{aligned}$

Total concentration of iron,

$\begin{aligned}{\text{Total iron}}&=0.49+0.875\\&=1.37{\text{ mg}}\end{aligned}$

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Answer Details:

Grade: High School

Subjects: Biology

Topic: Dietary Iron

Keywords:

Heme, non heme, iron oxygen, hemoglobin, porphyrin, phosphorus, muscle, tissue, beans, grain, vegetables.

3 0

4 years ago

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How does the diet of the centenarians from the islands of Okinawa compare to that of most U.S. adults? a. U.S. adults consume

Serhud [2]

Answer:

d. Okinawans consume more vegetables but fewer calories.

Explanation:

Okinawan diet is the reason behind their long and healthy life. Their carbohydrate to protein ratio in diet is 10:1; which is opposite to the US population who eat more protein and less carbohydrate. A low protein and high carbohydrate diet protect from ageing related illnesses such as Alzheimer, cancer and cardiovascular disease.

8 0

4 years ago

Platelets make up ____________ of formed elements with a concentration between 150,000 and 400,000 per cubic millimeter. The pro

Simora [160]

<h3><u>Answers;</u></h3>

-less than 1%

-Thrombopoiesis

-Megakaryoblast

-Thrombopoietin

-Megakaryocyte

-Proplatelets

-Platelets (thrombocytes)

<h3><u>Explanation</u>;</h3>

Platelets (or thrombocytes) make up less than 1% of formed elements with a concentration between 150,000 and 400,000 per cubic millimeter. The production of platelets is called thrombopoiesis.
From the myeloid stem cell, a committed cell called a megakaryoblast is produced. It matures under the influence of thrombopoietin to form a megakaryocyte.

Megakaryocytes are easily distinguished both by their large size (about 100 micrometers [μm] in diameter) and their dense, multilobed nucleus. Each megakaryocyte then produces thousands of platelets.
The process of how megakaryoctes produce thrombocytes was in question until 2007. Researchers reported that megakaryoctes produce long extension from themselves called proplatelets.
While still attached to the megakaryoctye, these proplatelets extreough the blood vessel wall in the red bone marrow. The force from the blood flow "slices" these proplatelets into the fragments we know as platelets (thrombocytes).

5 0

4 years ago