2 Nov Embriologia del ojo humano pdf – File size: Kb Version: Date added: 29 Sep Price: Free Operating systems: Windows. 6 Feb Embriología humana. El conocimiento del desarrollo prenatal del ser humano resulta de gran impor-tancia para poder comprender. Scribd is the world’s largest social reading and publishing site.
|Published (Last):||11 December 2018|
|PDF File Size:||18.70 Mb|
|ePub File Size:||20.26 Mb|
|Price:||Free* [*Free Regsitration Required]|
Invited audience members will follow you as embriologia del ojo humano navigate and present People embrioloogia to a presentation do not need a Prezi account This link expires 10 minutes after you close the presentation A maximum of 30 users can follow your presentation Learn more about this feature in our knowledge base article. Reset share links Resets both viewing and editing links coeditors shown below are not affected.
Ojo Humano by laura montilla on Prezi
See embriologua popular or the latest prezis. It can also occur after injuries to the eye embriologia del ojo humano inflammation in the eye, the collagen fibres of the vitreous are held apart by electrical charges. In botany, a plant embryo is part of a seed, consisting of precursor tissues for the leaves, stem.
Conducto hialoideo — Hyaloid canal is a small transparent canal running through the vitreous body from the optic nerve disc to the lens.
Houston, we have a problem! It is composed mostly of phagocytes, which remove unwanted cellular debris in the field, and hyalocytes.
Embriología del ojo
In the primate fovea the ratios of rmbriologia cells to photoreceptors is about 2. The white outer area is the sclerathe central transparent part of which is the cornea. Blood vessels can be seen within the sclera, as well as a strong limbal ring around the iris. Once the embryo has expanded beyond the enclosing embriologia del ojo humano, it is no longer termed an embryo, embryos are used in various fields of research and in techniques of assisted reproductive technology.
Cyclopia and defective axial patterning in mice lacking sonic hedgehog gene function. After 25 years of age the embrioloyia size decreases, though not at a steady rate. The ciliated type is called respiratory epithelium as it is almost exclusively confined to the embriologia del ojo humano respiratory airways of the nasal cavity, trachea. Therefore, if blood, cells or other byproducts of inflammation get into the vitreous, if the embriologia del ojo humano pulls away from the retina, it is known as a vitreous detachment.
The high spatial density of cones along with the absence of blood vessels at the fovea accounts for the visual acuity capability at the fovea. Free remnants can sometimes be seen as floaters, an anterior remnant of the hyaloid artery can be seen in some people as Mittendorfs dot, a small pinpoint-like scar on the posterior surface of the lens.
As the lens expands in positive accommodation, its volume increases and this results in compression of the hyaloid canal, so that the volume of the eye remains constant.
Constrain to simple back and forward steps. Blausen Eye Anatomy El ectodermo embriologia del ojo humano formara el cristalino y el epitelio de la cornea.
The forebrain, the midbrain, and hindbrain are the three portions of the brain during early development of the embriologia del ojo humano nervous system. Cancel Reply 0 characters used from the allowed.
Embriologia del ojo y oido by Raul Hurtado on Prezi
When the sphincter pupillae contract, the iris decreases or constricts the size of the pupil, the dilator pupillae, embriologia del ojo humano by sympathetic nerves from the superior cervical ganglion, cause the pupil to dilate when they contract.
After birth, the canal contains lymph and its purpose is to facilitate changes in the volume of the lens.
The vitreous body lies at the oo of the eye embriologia del ojo humano, between the lens and the retina. By 5 weeks in utero, it is visible as a single portion toward the front of the fetus, at 8 weeks in utero, the forebrain splits into the left and right cerebral hemispheres.
In any human age group there is considerable variation in maximal pupil size. Houston, we have a problem! The cerebrum consists of the cortex, underlying white matter. These allow floaters dl are perceived in the field as spots or fibrous strands.
Simple columnar, cells can be secretory, absorptive, or excretory, Simple columnar epithelium can be ciliated or non-ciliated, ciliated columnar is found in the reproductive tract.
Creating downloadable prezi, be patient. Floaters are generally harmless, but the onset of recurring floaters may signify a posterior vitreous detachment or other diseases of the eye.
Present to your audience. In humans the huumano is round, but other species, such as cats, have vertical slit pupils, goats embriologia del ojo humano horizontally oriented pupils.
An egg embriologia del ojo humano be fertilized in vitro and the embryo may be frozen for later use. Simple cuboidal, these cells may have secretory, absorptive, or excretory functions, examples include small collecting ducts of kidney, pancreas and salivary gland. Illu connective tissues 2. A human embryo, seven weeks old or from the ninth week of pregnancy. Regression of the hyaloid artery leaves a clear central zone through the vitreous humor, Cloquets canal is named after the French physician Jules Germain Cloquet who first described it.
Delete comment or cancel.
An embryo is an early stage of development of a multicellular diploid eukaryotic organism. Connective tissue proper consists of connective tissue and dense connective tissue Special connective tissue consists of reticular embriologia del ojo humano dfl, adipose tissue, cartilage, bone.
hmano More presentations by laura montilla LA Historia. Present to your audience. They are found in the walls of blood vessels and in certain ligaments. The vitreous humour is in contact with the retina and helps to keep it in place by pressing it embriologia del ojo humano the choroid.
Send link to edit together this prezi using Prezi Meeting learn more: The sensory pathway is linked with embriologia del ojo humano counterpart in the eye by a partial crossover of each eyes fibers.