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shutvik [7]
3 years ago
11

There are multiple adaptations in the digestive system that increase surface area, list three and where you will find these adap

tations.
Biology
1 answer:
Andrei [34K]3 years ago
3 0

Answer:

1. Many vertebrates have teeth, and chewing (mastication) breaks up food into small particles, expanding its surface and mixes it with fluid secretions, which makes it possible to digest. Teeth are located in the mouth of animals, where the digestive process initiates.

2. The stomach, which resembles a bag-like shape, can either fold up when empty and expand like a balloon when it fills up with food. By doing this, the area of activity of the gastric juice is expanded, increasing the efficiency of the digestion. Food enters the stomach from the esophagus.

3. The villi and microvilli present in the epithelial wall of the small intestine, are fingerlike projections that greatly enhance the surface area of the small intestine. In humans, this surface area is 300 square meters and it is over this large surface that the products of digestion are absorbed.

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3 0
3 years ago
The source of blood carried to capillaries in the myocardium would be the ________. A. coronary veins B. fossa ovalis C. coronar
lilavasa [31]

Answer:

The source of blood carried to capillaries in the myocardium would be the coronary arteries - C.

3 0
4 years ago
Read 2 more answers
2.   A series circuit contains two devices, one with a resistance of 10 ohms and one with a resistance of 4 ohms. If the generat
dsp73
2. In series, we add the resistance up
Use the formula V = IR to find the current.
R = 10+4 = 14, V=42
42=I (14)
I = 42/14 = 3 A

3. Closed

4. Answer B
This is because unlike poles attract and like poles repel.

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7 0
3 years ago
Read 2 more answers
approximately what percentage of the atp formed by the reactions of glycolysis is produced by substrate-level phosphorylation? *
tigry1 [53]

Substrate -level phosphorylation accounts for approximately 100% of the ATP formed by the reactions of glycolysis.

The direct transfer of a phosphate group to ADP to form ATP is known as substrate-level phosphorylation. It accounts for all of the ATP produced by glycolysis reactions. The first substrate-level phosphorylation occurs when 1,3-diphosphoglyceraldehyde is converted to 1,3 diphosphoglyceric acid and 2 NADH2, resulting in the formation of 6 ATP. Substrate-level phosphorylation converts the 1, 3-diphosphoglyceric acid to 3 phosphoglyceric acid, which produces 2 ATP. The second substrate-level phosphorylation takes place when phosphoenolpyruvic acid is converted to pyruvic acid, which results in the formation of two ATP molecules.

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5 0
1 year ago
While in the playroom a school-aged child exhibits twitching of the right arm and leg that almost immediately progresses to a ge
horsena [70]
There are choices for this question:

A. Take the other children to their rooms
B. Put a plastic airway into the child's mouth
C. Place a large pillow under the child's head
D. <span>Move the toys and furniture away from the child
</span>
The correct answer is "move the toys and furniture away from the child". This is because toys, furniture, and nearby object can potentially injure the child while he is seizing and this can be a cause of a preventable injury to this child. Taking other children to their rooms as well as placing a large pillow under the child's head are unnecessary measures. Putting a plastic airway to the child's mouth may lead to a traumatic injury and can aggravate the condition. 
5 0
4 years ago
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