All categories

2 years ago

Why is the blood that flows from the lungs toward the heart a brighter red than the blood that flows the other direction?

Biology

2 answers:

Papessa [141]2 years ago

8 0

Answer:

The blood that flows from the lungs toward the heart is brighter red than the blood that flows in the other direction because of the presence of oxygen-bound hemoglobin.

Explanation:

The blood is an important fluid in the body of higher animals that transport and distribute nutrients and essential materials round the body as well as remove toxic wastes from their various sources in the body to the sites where they will be disposed out of the body.

One of the most important material that the blood transport round the various cells and tissues of the body is oxygen. Oxygen is important for aerobic respiration, a catabolic process during which the energy locked up in the food that organisms take is unlocked and made available for various body processes.

Bloods are usually oxygenated in the lungs when an organism breathes-in oxygen. The oxygenated blood then travels to the heart where it is pumped round the body through the aorta to smaller arteries. While traveling round the body, oxygen diffuses into the various cells and tissues that requires it and excretory product such as $CO_2$ diffuses the other way round.

De-oxygenated bloods do not return into the arteries. Rather, they enter the veins and then find their way into the lung where they become oxygenated again and the cycle becomes repeated.

Hence, the blood entering the heart from the lung contains oxygen which is usually bonded to the hemoglobin component of the red blood cell, giving it a brighter red colour compared to the blood entering the lung from the veins which has been depleted of oxygen.

The reason for the brighter red colour is the presence of oxygen-bound hemoglobin.

Leona [35]2 years ago

4 0

For the answer to the question above, oxygen makes it Redi would think it has to do with the amount of oxygen in the blood stream. So the answer is the third one, t<span>he presence of oxygen–bound hemoglobin makes it bright red.
I hope my answer helped you</span>

You might be interested in

Researchers studied mice embryos to determine whether the cells of the ear bones originated from the same embryonic cells as the

Rina8888 [55]

The researchers will use mice instead of opossums or humans to determine whether the cells of the ear bones originated from the same embryonic cells as the cells that form the jaw in other vertebrates because in this type of experiment, organisms that are ideal are the ones that have a short life span, easy to be researched on and easy to mantain.

It will be very tedious and demanding to use opossums and humans in this type of practical experiment because,it is against the culture and norms guilding human living and existence to use humans as model organisms,opossums as well are very bad model organisms because unlike the mice,opossums are long lived and it will be very difficult to raise and maintain an opossum in a laboratory.

Humans and mice are both mammals just that human is a higher mammal but they share similar features in terms of pattern of development,though there is a clear difference during their early development,so because of the common ancestry shared by the mice and humans,the result of the experiment on the mice with share a close similarity with the pattern that is expected in humans.

8 0

2 years ago

LINNAEUS classified organisms into two kingdoms. How was his system of classificationImpacted after the invention of the microsc

andre [41]

The correct answer is option C, For more kingdoms were introduced

Linnaeus was the first to develop a system of classification of living things. He mainly grouped the living things into animal or plant kingdom, but later with the advent of microscope it became easy for the researchers to observe microscopic beings and thus three new kingdoms were proposed namely- fungi, protists (considered as simple organism) and monera (bacteria).

Not only this with in a kingdoms comes several phylum, these phylums were also reorganized and recategorised based on the discovery of more categories and subcategories.

7 0

3 years ago

Read 2 more answers

Which part of cell division is different and plant and animal cells

OlgaM077 [116]

Answer:

cytokinesis

Explanation:

The most important and observable difference in the plant animal cells mitosis is the cytokinesis.

5 0

2 years ago

El sistema muscular humano presenta tres funciones específicas cuales son

bija089 [108]

Answer:

The muscular system is the set of more than 650 muscles in the body, whose main function is to generate movement, whether voluntary or involuntary.

Explanation:

The functioning of the muscular system can be divided into 3 processes, one voluntary in charge of the skeletal muscles, the other involuntary carried out by the visceral muscles and the last process is the duty of the cardiac muscles and autonomous functioning.

Skeletal muscles allow walking, running, jumping, in short, they empower a multitude of voluntary activities. Except for reflexes, which are the involuntary responses generated as a result of a stimulus. As for involuntary functioning muscles, it can be specified that they perform independently of our will but are supervised and controlled by the nervous system, they are responsible for generating pressure for the transfer of fluids and the transport of substances throughout the organism with the help of peristaltic movements (such as food, during the digestion and excretion process).

The autonomous process takes place in the heart, an organ made of heart muscles. The primary function of this muscle tissue is to contract regularly, millions of times, having to endure fatigue and weariness, or else the heart would stop.

7 0

3 years ago

How is biotechnology different from genetic modification?

Juliette [100K]

<span>genetically engineering rice that can be grown in more varied climates </span>

5 0

2 years ago