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Lysosomes are our body's caretakers
These are membrane-bound organelles found in every eukaryotic cell (that is, almost all cells in the body). Lysosomes are widely known as terminal catabolic stations, which rid cells of waste products and remove metabolic "building blocks".
The latter, by the way, support basic biosynthetic reactions during starvation and energy deficit☝🏻
The fetal circulation is a completely unique system
The fetal circulation is otherwise known as the placental circulation. It is in the placenta where the exchange of substances between the blood of the fetus and the mother's blood takes place.
We won't describe the whole system - this subject is complicated even for medical students😁But here's an interesting fact - the blood of the mother and fetus do not mix.
While in utero, the heart of a 12-week-old fetus pumps 28 liters of blood per day, at this time the frequency of its beats is almost 2 times higher than that of an adult.
The microphotograph depicts the ear.More specifically, the receptors of the auditory system and the vestibular apparatus.
These are hair cells called stereocilia. They pick up vibrations from the outside, and the brain interprets this information.
Trachea
Note the elasticity and structure, the back rings are not closed as the trachea is adjacent to the esophagus - this allows the food lump to pass unobstructed.
Russell-Silver syndrome is a complex of hereditary anomalies.
Congenital dwarfism resulting from abnormal embryonic development, low birth weight, delayed general development, triangular face, lowered corners of the mouth, shortened and bent fingers, and syndactyly.
There is no treatment; cosmetic surgery is possible.
Twins can be born on different days!
And nope, not at 11:59 p.m. one day and 00:01 a.m. the next.
The difference could be more than one day!
It could happen if the twins were in different amniotic sacs and the birth began during a period of prematurity.
Under these conditions the birth may end with the birth of one baby, after which the labor activity will disappear.
Then the woman in labor and the pregnant girl at the same time will be sent to a room☝🏻
The probability of such a course of events is extremely low, but it is possible and medicine has recorded such cases.
The brain is the most nutritionally demanding organThe number of "branches" that make up the blood vessels is incredibly huge☝🏻
The brain can't exist without oxygen or glucose.
Nerve cells need these two substances to function and survive.
If the brain does not get enough oxygen or glucose within 3-5 minutes, irreversible damage occurs. As long as the brain cells still have oxygen and glucose in them, they won't die for another few minutes.
Ventricular fibrillation looks like this
A life-threatening condition in which a potentially fatal, uncoordinated series of very rapid and ineffective ventricular contractions occurs.
In a fibrillation situation, defibrillation is necessary.
In the photo you can see the manifestation of glaucoma.Glaucoma is a chronic eye pathology characterized by increased intraocular pressure, the development of optical neuropathy, and visual impairment.
Patients complain of narrowing of the fields of vision, pain, threading and a feeling of heaviness in the eyes, blurred vision, deterioration of twilight vision, and in severe cases, blindness.
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Moebius syndrome (congenital facial diplegia) is a rare congenital anomaly characterized by an absence of facial expression.
The pathology is characterized by facial nerve palsy and has autosomal dominant, autosomal recessive and X-linked inheritance.
The main clinical manifestations are limited mobility, strabismus, and various neurological symptoms.
That's the real gladiatorial fights inside the bodyThe white blood cells are fighting the parasite☝🏻
Eosinophils, one of the fractions of white blood cells, do this. Besides this task, they are also responsible for the emergence of an allergic reaction.
For this reason, the level of eosinophils increases during parasitic lesions and allergies - it is a diagnostic sign of these conditions.
Neurotransmitters - they're everywhereWell, at least that's what you could say about our brains☝🏻
And you probably know the names of these neurotransmitters - dopamine, serotonin, adrenaline, taurine...
But what exactly is their function?
Neurotransmitters are substances that trigger an electrochemical impulse between neurons or from a neuron to a muscle, gland, and other cells. That is, their job is to transmit a command from one part of the nervous system to another part, or from the nervous system to another part of the body.
Therefore, we can say that neurotransmitters are mediators♻️
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Are cataracts a disease of old men?Not really.
Old age is just one of many factors that can cause this pathology.
Trauma, genetic predisposition to early cataract development, inflammatory eye disease, eye damage from radiation, diabetes mellitus and hypothyroidism.
And this is just a short list.
Recall that the cataract itself is a clouding of the lens of the eye. For this reason, the picture received by the brain becomes cloudy.
Diffuse retinal hemorrhages.
The main causes of retinal hemorrhage include:
- Blockage of a blood vessel
- Eye trauma
- Traumatic brain injury
- Fragility of the vessel walls as a complication of - diabetes mellitus
- Exposure to high blood pressure.