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Question 21781

* Human Digestive System: Mouth: Food enters into the mouth Teeth: Gushed and chewed Salivary gland: secretes the saliva saliva contain enzyme called salivary amylase which convert starch into sugar. Oesophagus: Carries food to stomach from mouth in peristaltic movent. Desuphag us connects stomachs to mouth. It is also called Food Piper Gut Stomach: In the wall of stomach gastric gland are present. which secrete gastric juice Gastric juice contains. (1)

HCL

(2) Ency me Pepsin (3) Mucus. HCL: Greater acidic medium and kill harmful microorganism

m

Pepsin: In Acid medium, the enzyme pepsin digests the protein. Necks: Protect o inner limning of stomach from action of HCL.

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Question 21782

What is process of human digestion? Explain in 120-150 words class I.

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Question 21783

(3) Metamorphosis (4) Budding एक टैडपोल जिस प्रकार द्वारा प्रक्रम द्वारा व्यस्क में विकसित होता है, वह है : (1) निषेचन . (2) रोपण (3) कायान्तरण (4) मुकुलन

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Biology

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Question 21784

जनन क्या है सभी क्रिया का नाम हे

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Biology

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Question 21785

Identify the given structure and name the compound. A: Deoxyribose, Ribose B: Glucose, Ribose C: Ribose, Deoxyribose

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Biology

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Question 21786

Explain the process of respiration in plants

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Biology

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Question 21787

What is shynase what happen at the synapse between two neuron how are the messages carried across the sinapse

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Biology

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Question 21788

New age robo company ne hotel vyavsaya Sathi taiyar kelele yantraManav ?

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Biology

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Question 21789

What is the power house of the cell

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Biology

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Question 21790

गै प्रक्रम : पोषण कर्या है

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Biology

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Question 21791

(9) Jahad syotem t? (1) ent (2) घैन क्ष (3) प्रिय प्रणाल (4) बोहु कमाया

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Biology

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Question 21792

our pump - the heart The heart is a muscular organ which as big as our fist (Fig. 6.10). Becatyse both oxygen and carbon dioxide have te be transported by the blood, the helet has different chambers to prevent the (6xygen-rich blood from mixing with the blood containing carbon dioxide the carbon dioxide-rich blood has to reach the lungs for the carbon dioxide to be removed) and the oxygenated blood from the lungs has to be brought back to the heart) This oxygen-rich blood is then pumped to the rest of the body. We can follow this process step by step (Fig. 6.11). Oxygen-rich blood from the lungs comes to the thin-walled upper chamber of the heart on the left, the left atrium. The left atrium relaxes when it is collecting this blood. It then contracts, while the next chamber, the left ventricle, relaxes, so that the blood is transferred to it. When the muscular left ventricle contracts in its turn, the blood is pumped out to the body. De-oxygenated blood comes from the body to the upper chamber on the right, the right atrium, as it relaxes. As the right atrium contracts, the corresponding lower chamber, the right ventricle, dilates. This transfers blood to the right ventricle, which in turn pumps it to the lungs for oxygenation. Since ventricles have to pump blood into various organs, they have thicker muscular walls than the atria do. Valves ensure that blood does not flow backwards when the atria or ventricles contract. Fygure 6.11 Shematic representation of transport and exchange of anpen and carbon diadide Oxygen enters the blood in the lungs The separation of the right side and the left side of the heart is useful to keep oxygenated and deoxygenated blood from mixing. Such separation allows a highly efficient supply of oxygen to the body. This is useful in animals that have high energy needs, such as birds and mammals, which constantly use energy to maintain their body temperature. In animals that do not use eneny for this purpose, the body temperature depends on the temperature in the environment. Such animals, like amphibians or many reptiles have three-chambered hearts, and tolerate some mixing of the oxygenated and de-oxygenated blood streams. Fishes, on the other hand, have only two chambers to their hearts, and the blood is pumped to the gills, is oxygenated there, and passes directly to the rest of the body. Thus, blood goes only once through the heart in the fish during one cycle of passage through the body. On the other hand, it goes through the heart twice during each cycle in other vertebrates. This is known as double circulation. 106 Science

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Question 21793

How are the fats digested where do the get digested

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Biology

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Question 21794

The process of covering the bare ground between plants with layer of organic matter like straw to retain moisture is called:

Mulching
Rock dam
Contour barriers
Intercropping

Topic:

Biology

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Question 21795

view of the human heart the left ventricle, relaxes,

s

muscular left ventricle cor the body. De-oxygenated chamber on the right, the 1 contracts, the correspond This transfers blood to the lungs for oxygenation. Sin organs, they have thicker

m

that blood does not flow ba Figure 6.11 Schematic representation of transport and exchange of oxygen and carbon dioxide Oxyg The s the h oxyge allow body. energy cont tempe for th on th anima three- of the stream chalk to the to the thru, br y passage through the body. twice during each cycle in circulation. 106

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Question 21796

Hi can you help me

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Biology

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Question 21797

Hi mam I have a question

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Biology

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Question 21798

6. मनुष्य के आहारनाल की रचना का वर्णन करे 7. खनुष्य के आहारनाल में पाचन की क्रिया का

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Biology

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Question 21799

5. अमीबा का भोजन क्या है? 6. मनुष्य के आहारनाल की रचना का वर्णन करें।

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Biology

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Question 21800

5. अमीबा का भोजन क्या है? अमीबा में पोषण 6. मनुष्य के आहारनाल की रचना का वर्णन करें

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Biology

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