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3 years ago

What happens to the concentration of oestrogen at ovulation?

Biology

1 answer:

frez [133]3 years ago

5 0

Answer:

When oestrogen rises to a high enough level it causes a surge in LH from the pituitary which causes ovulation where an egg is released from the follicle (Day 14 of the cycle). The follicle becomes the corpus luteum and this produces oestrogen and progesterone which inhibit FSH and LH production by the pituitary.

Explanation:

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Explain the biological structure hierarchy of the human body and the role of homeostasis in maintaining the body. Include the fo

Nuetrik [128]

Answer:

1. Biological structure of the human body

The human body is organized in different levels according to their complexity.

The levels are the folowing (increasing complexity).

1. Atom (N, O, C,..)

2. Molecule (Protein, lipids, water...)

3. Organelle (mitochondria, golgi apparatus,...)

4. Cell (blood cells, bone cell,..)

5. Tissue (connective tissue, epithelial tissue,..)

6. Organ (lungs, kidney,..)

7. Organ system (skeletal system, muscuar system,...)

8. Organism (the human body)

Each of the levels is formed by an agrupation of the previous level. For example, cells are formed by a number of organelles, and a group of cells form a tissue.

Cells are the basic units of structure of the body, and there are different types of them.

2. Homeostasis

Homeostasis is a process of the body by which the organism works to maintain a stable internal environment, while adjusting to changes in the external environment.

This process is possible because of the work of both the nervous system and the endocrine system. While the first controles the body's activities and detects the necesity of adjustments, the second regulates the activities by using hormones.

6 0

1 year ago

Biotic factors are the living aspects of an ecosystem (e.g.

romanna [79]

Answer:

Nonliving aspects of an ecosystem are known as (Abiotic)

4 0

3 years ago

Which organs produces and secretes enzymes that are essential for proper digestion?

ollegr [7]

Answer:

An enzyme refers to a kind of protein found inside a cell. The enzymes result in the chemical reactions within the body. The function to accelerate the rate of chemical reaction in order to support life. The enzymes in the body assist in performing very essential functions. These comprise eradicating toxins, building muscle, and dissociating particles of food at the time of digestion.

Enzymes are needed for performing the proper function of the digestive system. Digestive enzymes are primarily produced in the stomach, pancreas, and small intestine. However, even salivary glands generate digestive enzymes in order to dissociate the molecules of food at the time of chewing.

There are three prime kinds of digestive enzymes, which are classified on the basis of the reactions they catalyze. These are protease, amylase, and lipase.

3 0

3 years ago

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Question: A rat approaches a piece of rotting fruit, takes a small bite, and runs away. Which statement best explains the reason

Anna [14]

Answer: See below

Explanation:

There should be another answer that can be chosen: the rat’s chemical receptors detect chemicals in the fruit that alert the rat to possible danger. Sensory receptors in the rat's whiskers respond to input about the texture of the fruit, maybe it's slimy or rancid, if if it was another factor such as the environment, it wouldn't have approached the fruit in the first place.

4 0

2 years ago

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Which structure supports and connects the cells of the nervous system?

Gemiola [76]

Neuroglia, which is sometimes referred to as "glia", are cells that are not neurons but merely support and provide protection for neurons. They are called 'non-neuronal cells' and they exist in the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves outside the brain and the spinal chord).

3 0

3 years ago