Junior 1 Biology Food and illness matching masters, please enter .

Iodized salt, kelp – endemic goiter.

Pork liver – anemia, night blindness, rickets.

Cod liver oil – rickets.

Cayenne pepper – scurvy, neuritis.

Carrots - scurvy.

Whole grains such as cereals – beriberi.

Explanation: Iodized salt, kelp is rich in iodine, can ** endemic goiter caused by iodine deficiency pig liver contains vitamin A, **night blindness, pig liver contains iron, can cure anemia.

Pig liver contains calcium, which can treat rickets.

Cod liver oil contains vitamin D, which can promote calcium absorption and treat rickets chili pepperCarrots contain vitamin C, which cures scurvy.

Capsicum belongs to the Solanaceae family, is an annual plant, known as "red medicinal material", has an obvious effect on maintaining the normal physiological functions of the human body, enhancing the body's disease resistance and vitality, and can also prevent cancer, anti-cancer, delay aging, high blood pressure, cerebral hemorrhage, sepsis, arteriosclerosis, neuritis.

Whole grains such as cereals contain vitamin B2 to treat beriberi.

1 Chili pepper is rich in vitamin C, which can lead to scurvy.

2 Pig liver contains vitamin A, B1, B2 C, etc. Neuritis is a lack of B vitamins, so pig liver is against neuritis.

3 Cod liver oil contains vitamins D and A, the former helps calcium absorption, and the latter prevents dry eye syndrome and maintains normal growth, so this item can prevent rickets.

4 Beriberi is a deficiency of vitamin B1, also known as thiamine, which is a water-soluble vitamin, widely found in whole grains, legumes, lean meat and other foods.

5 Kelp for osteoporosis.

1. Kelp (c.)Neuritis DBeriberi. Endemic goiter ) kelp is rich in iodine and also contains VB1 (in the encyclopedia).

2. Cayenne pepper (b.)scurvy, decreased resistance, etc.).

Chili peppers are rich in VC (which should be mentioned by the teacher during the lesson).

3. Pork liver (**dryness, night blindness, dry eyes, etc.).

The liver of animals is rich in VA and can ** the above symptoms.

4. Cod liver oil (a.)Osteoporosis erickets).

Cod liver oil contains VD, which can promote calcium absorption, **rickets.

5. Coarse grains such as cereals (c.)Neuritis DBeriberi.

Whole grains such as cereals contain VB1, beriberi or neuritis when deficient.

Please refer to Biology (Grade 7 Volume II) (Human Education Edition) p25-p26

1. Kelp. 2. Cayenne pepper (b.)

3. Pork liver. 4. Cod liver oil.

5. Grains and other coarse grains.

Kelp is rich in iodine and also contains VB1

Peppers are rich in VC.

The liver of animals is rich in VA

Cod liver oil contains VD, which promotes calcium absorption, rickets and osteoporosis.

The seed coat of cereals contains VB1, beriberi or neuritis when it is deficient.

Vitamin A: pork liver and other animal livers, carrots.

B vitamins, liver, carrots.

Vitamin C, pork liver, peppers, green vegetables, fruits.

Vitamin D, soybeans, cod liver oil, liver, egg yolks.

The teacher said.

b. Explanation: This is a temporary cerebral hypoxia. In general, there is no problem with this. Just have some anemia.

When you want to get up and stand up after waking up, sitting for a long time, or squatting for a long time, you will suddenly feel dizzy, and those who are in a mild condition may only recover after a few seconds of dizziness, but in severe cases, you may be severely dizzy and unconscious, resulting in a fall that may cause brain or body injury!

This condition is medically known as postural hypotension . Why is it that some people have no difficulty at all when they get up, while others may cause physical discomfort or even injury? In fact, this is related to the state of physical health, as long as the body circulation is good, it is not easy to have such a situation.

For those who already have postural hypotension, they don't need to be too nervous, as long as they don't change their movements immediately, they can avoid discomfort or injury.

Recognize postural hypotension.

Causes of postural hypotension.

When we want to change from a lying position, a sitting position, or a squatting position to a standing position, although the posture seems simple, it requires the coordination and cooperation of various organs of the body, including the heart, blood vessels, nerves, etc., to achieve the task of getting up smoothly.

When the body is about to stand up, the heart must send enough blood through the blood vessels to the brain at the highest point, and the blood vessels must be coordinated by the nervous system to reduce the diameter of the tube appropriately so that the blood can travel higher and farther. However, if these organs are too slow to respond or unable to do so, the brain will experience a temporary lack of oxygen, resulting in dizziness or fainting, also known as postural hypotension.

7. D After squatting for a long time, the blood of the lower limbs cannot be transported upwards normally, resulting in the closure of the venous valve.

As can be seen from the diagram, a 1 is a dendrite, 2 is a cell body, 3 is a nerve fiber, 4 is a nerve ending, b The complete reflex arc is composed of receptors, afferent nerves, nerve centers, efferent nerves, effectors, and this diagram has only one nerve cell, so it is definitely not true.

c Nerve impulses are conducted on nerve fibers and can also be conducted between two cells by releasing neurotransmitters

Nerve impulses are transmitted bidirectionally on nerve fibers and unidirectionally in neurons.

20.The five-point sampling method is commonly used in the five-point sampling method. That is, the midpoint of the diagonal is determined as the central sampling point, and then four points with the same distance from the central sample point are selected as the sample points on the diagonal.

Actually, it's c

21.When breathing calmly, fewer muscles are involved, and only the external intercostal muscles contract, which lifts the thoracic cage up, causing pressure in the chest cavity to decrease and air to enter the lungs. When exhaling calmly, there is little need for muscles, as long as the external intercostal muscles are relaxed, gravity can cause the chest to descend and expel the gas.

During exercise, due to the increase in the concentration of carbon dioxide in the body, it is necessary to expel the gas in a short period of time, and at the same time inhale more oxygen, and under the command of the nervous system, the respiratory muscles work faster. More inspiratory muscles, such as the pectoralis major and minor muscles, serratus anterior, and scalene muscles, increase the amplitude and intensity of thoracic contractions, that is, the depth of breathing deepens. At the same time, the exhalation also changes from passive to active.

That is, with the participation of the intercostal muscles, abdominal wall muscles, etc., the person can expel the gas in a shorter time, that is, the respiratory rate increases. At the same time, the involvement of the inspiratory muscles also increases the respiratory rate.