Explain the gaseous exchange in lungs

Answers

Answer 1

Answer:

Gas exchange is the delivery of oxygen from the lungs to the bloodstream, and the elimination of carbon dioxide from the bloodstream to the lungs. It occurs in the lungs between the alveoli and a network of tiny blood vessels called capillaries, which are located in the walls of the alveoli.

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Answer 2

Answer:

Answer:

breathing allows the exchange between 2 gases: oxygen and carbon dioxide. Gas exchange occurs in millions of lung alveoli and the capillaries that surround them

Explanation:

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Compare and contrast the process of digestion in cindarians and echinoderms

Answers

Some of the major difference in the digestive system of Cnidarians and echinoderm are

Cnidarians have an incomplete digestive system specifically extracellular digestion occur, where enzymes break down the food particles are degraded by enzymes and absorption occur in its gastrovascular cavity.

While in echinoderms, the digestive system may vary depending on types of species and need of their food types.

They use of tube feet to reach to their food sources and move their mouth area toward the food. Their digestive system relatively simple when compare with human.

What are the differences between cnidarians and echinoderms?

In Cnidaria only have gastrovascular cavity, diploblastic, presence of stinging cell, Hydrostatic skeleton etc.

In Echinoderm have triploblastic, water vascular system with unique characteristics, calcareous endoskeleton etc.

Echinoderms have no excretory or respiratory systems.

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cnidaria - incomplete digestion [have only a single opening] ,digestion is extracellular and intracellular ,they have stinging casules called cnidoblast which helps for anchorage,defence and capture prey.
echinodermata - complete digestion[mouth on ventral,anus on dorsal],have water vascular system helps in locomotion ,capture of prey,transport of food....digestion is intracellular

How can i put punnett square in to a sentence?

Answers

I enjoyed learning about punnet square in school.

Sally did not know how to use a punnett square, so I taught her how to use it.

Two or more tissues together with a special job form a(n):heredity
brain
organ
neuron

Answers

Answer:

Organ

Explanation:

Answer:

organ

Explanation:

Why did allies engage in propaganda efforts overseas?

Answers

This was to gain more support for Allied efforts in the Second World War to ensure their victory. By utilizing media, propaganda to support the war went into full swing as companies lent their efforts to achieve that end. They convinced people to buy war bonds as well as boost morale for the troops.

Select all that apply. Plants are used for ____

Answers

Food, medicine, soil holders, decoration, and building(straw is an example) are some that I can think of

Nutrition, medicine, decoration, cleaning the air.

The human body contains about 5 liters of blood. The liquid portion of the blood is called ____________________________________________and makes up about 55% of the blood volume. The rest of the blood is made up of the formed elements. These consist of the _____________________________________________ (another word for red blood cells) and the ________________________________________________(another word for white blood cells) and cell fragments called ____________________________________________ which are responsible for clotting. All the blood cells are developed in the bone marrow thru a process called ____________________________________________________________.

Answers

Answer:

The correct answer will be option-

1. Liquid portion of blood- blood plasma.

2. RBC- erythrocytes.

3. WBC- leukocytes.

4. Cell fragments- platelets.

5. Process- hematopoiesis.

Explanation:

The blood is the connective tissue present in the body which connects the two or more systems of the body.The centrifugation of blood showed that the blood is composed of liquid and solid particles as the liquid portion is suspended in the supernatant while the solid particles are present in the pellets.

The liquid portion of the blood is known as blood plasma while the solid portion is composed of three types pf cell: the red blood cell (erythrocytes), white blood cells (leukocytes) and the platelets. All these cells perform different functions like RBC helps in the transport of oxygen, WBC provides immunity to the cell and platelets helps in clotting of the blood.

These blood cells are formed in adults in bone marrow through hematopoiesis from the stem cells presents in the marrow.

Thus, the options are correct.

Final answer:

The liquid portion of blood is plasma, making up about 55% of it's volume. The remaining consists of erythrocytes (red blood cells), leukocytes (white blood cells), and platelets which clot blood. These elements are developed in the bone marrow through a process called hematopoiesis.

Explanation:

The liquid portion of the blood is called plasma and makes up about 55% of the blood volume. The rest of the blood is made up of what's known as the formed elements. These consist of the erythrocytes (another word for red blood cells) and the leukocytes (another word for white blood cells) and cell fragments called platelets which are responsible for clotting. All the blood cells are developed in the bone marrow through a process called hematopoiesis.

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If the pendulum is allowed to continue to swing, it will eventually come to a stop. explain why.

Please Help! Don't remember going over this! What activates a convection current, starting the flow of a fluid? A. cold temperatures at the north pole B. heated liquids at the earth’s surface C. iron-rich rocks in the mantle D. temperature differences in the mantle