Is your baby s first senses developing?

Yes, the child's own senses are usually developed first. This is also a very correct order. It should be put in perspective.

Yes. In this way, they can perceive a lot of things, and they can develop their brains better.

Yes, the first thing a baby develops is his senses, so prenatal education can be carried out at about 18 weeks.

The first thing a baby develops is his senses, and the baby develops hearing first, and it develops hearing at about 6 weeks.

Yes, because the first thing a child develops is the neurobrain and senses, and this can also make the child grow up quickly, and at the same time, it is also very good for the child's development.

Eyeball wall. The walls of the eyeball, from the outside to the inside, are: fibrous membrane, vascular membrane, and retina.

1 Fibrous membrane.

Thick and tough, the anterior 1 6 is the cornea, and the posterior 5 6 is the sclera.

1) Cornea: colorless and transparent, with refractive effect.

2) Sclera: milky white and opaque.

Scleral venous sinus: It is a annular tubule deep at the junction of the corneal and sclera.

2 Vascular membranes.

Rich in blood vessels and pigments, it is divided into iris, ciliary body, and choroid from front to back. <>

1) Iris: disc-shaped, ** is the pupil, surrounded by the pupillary opening muscle and pupil sphincter. (2) Ciliary body:

Behind the iris, there is a thickened part of the vascular membrane, which is connected to the lens by a ciliary band. It contains the ciliary muscle, which relaxes when contracted and tightens when it is relaxed.

3) Choroid: behind the ciliary body, inside the sclera.

3 Retina.

It is located in the inner layer of the vascular membrane. The main structures include optic nerve disc, macular and fovea.

1) Retinal Division.

1) Vision: Lined with the inner surface of the choroid, it has a photosensitive effect.

2) Blind part: Lined with the iris and ciliary inner surface, no photosensitive effect.

2) Tissue structure of the retinal optic region.

1) Pigment epithelial layer: contains melanin.

2) Nervous department: contains three layers of cells.

Photoreceptor cells: including cones and rods. Cone cells sense bright light and color, and rods sense low light.

Bipolar cells: connect optic cells to ganglion cells.

Ganglion cells: axons make up the optic nerve.

Contents of the eyeball.

The contents of the eye include aqueous humor, lens, and vitreous. It is a refractive device of the eye.

1 Aqueous humor. (1) Occurrence site: Produced by the ciliary body.

2) Circulation route: aqueous humor, posterior chamber, pupil, anterior chamber, iris, cornea, corneal angle, scleral venous sinus, ophthalmic vein.

2 Lenses.

1) Morphology: double-sided convex.

2) Conditioning. 1) Nearsightedness: ciliary muscle contraction, ciliary band relaxation, lens convexity, refractive enhancement.

2) Distance: ciliary muscle relaxation, tension of the ciliary band, thinning of the lens, and weakening of refraction.

3 Vitreous.

It is a colorless transparent gel and is an important refractive device.

Eye sub-apparatus. The eyelids are divided into upper and lower eyelids.

The conjunctiva is divided into the bulbar conjunctiva and the palpebral conjunctiva, and the turning point of the two is called the conjunctival vault, and the conjunctival sac is formed when the eyes are closed.

Tear organs. 1 Lacrimal gland: located above the outside of the eyeball, it secretes tears.

2 Lacrimal duct: including puncta, lacrimal sac, and nasolacrimal duct. The nasolacrimal duct opens into the lower nasal passage.

There are seven extraocular muscles, named levator palpebrae superioris, medial rectus, lateral rectus, superior rectus, inferior rectus, superior oblique, and inferior oblique.

Research into the human brain has deepened, and researchers have discovered several other human senses. In addition to the "five senses", there are actually multiple sensory perceptrons throughout the human body, which play a very important role, such as maintaining the body's balance and sending hunger signals. A summary of the various lesser-known senses is summarized below.

A sense of balance. You don't fall when standing or walking, thanks to a sense of balance. The sense of balance is controlled by the lymphatic fluid in the inner ear, which works in tandem with vision to enable a person to move around safely. Constantly spinning in circles will prevent the system from working properly, causing vertigo and loss of balance.

Proprioceptive <>

When we close our eyes and raise our hands, we know where our hands are without looking. This is where proprioception comes into play, and it allows us to know where our body parts are without having to look. It may not sound like much use, but without this sense, people would need to constantly look down at their feet in order to walk.

When investigating drunk driving, the police will also test proprioception. Thermal sensations.

Sitting around the campfire, one can feel the heat. Take out a piece of ice from the fridge and people can feel the cold. **Thermoreceptors on the body sense temperature changes.

Previously, the ability to detect heat and cold was relegated to the sense of touch. However, people don't need to touch something to feel its heat (e.g., sitting around a campfire, we don't need to touch it to feel the heat), so thermal sensation is a sensory in its own right. The thermal system in the brain detects and controls core body temperature.

Pain. This sense can perceive pain. Paul Fuchs, associate director of the Center for Sensory Biology at Johns Hopkins University, said nociceptive sensations are often mixed with thermal sensations because, in a way, both sensations use the same neurons.

Injury sensors are distributed not only in **, but also in bones, joints, and internal organs.

Feelings from the inside. This is a general term for the internal sensations that control the organs in the body. Fuchs said that there are various receptors in the human body that trigger the subconscious mind and make conditioned reflexes, which has great implications for physical health.

Most of the body's unconscious behaviors are controlled and managed by these receptors, such as triggering coughing, controlling respiratory rate, and alerting when hungry or thirsty.

Spatial sense. With the eyes closed, one can still feel that there is a wall in front of them.

Emotion. Stress, joy, anger, sorrow, sadness, fear, and shock.

Physical condition. Excessive exercise, lack of rest, malnutrition, and people can feel noticeable tiredness.

The visual development of newborns, as well as the development of the state of hearing and the development of the olfactory state, as well as the development of the sense of touch and consciousness offline, are all things that you may not expect.

Their noses, eyes, and mouths develop relatively quickly, and they can perceive well, and often make some movements.

Newborns' sense of touch, smell, and taste are very sensitive, so parents should often communicate with the baby, and also often touch the treasure, so that it will give the baby a sense of security.