| Gross Morphology |
- Pronounced cervical curvature;
- Retinal pigmented;
- Open pavilion;
- Short limbs;
- Digits with “paddle” shape. |
- Pronounced nasal region;
- Elongated limbs;
- Deep grooves between the digits. |
- Acoustic meatus covers the pavilion of the external ear;
- Nasal region withsensory hairs;
- Openthe oral cavity;
- Thin skin shows withperipheral vessels;
- Separated digits;
- Early formation of claws. |
- Thickening of the skin;
- Eyelid divided into upper and lower;
- Well-defined digits;
- Apparent claws. |
- Not Presents cervical curvature. |
- Skin pigmentation;
- Well-developed fetus with neonate features. |
| Histology |
- Brain;
- Pituitary gland;
- Tongue;
- Nasal prominence and mandibular;
- Heart(atrium, ventricle and pericardium);
- Somites;
- Lung bud;
- Liver – interlobar zone;
- Stomach;
- Intestinal loops;
- Pelvic limb bud; |
- Fourth ventricle;
- Pharyngeal pouch;
- Vomeronasal organ;
- Oral cavity;
- Ventricular wall;
- Lung;
- Diaphragm;
- Stomach. |
-Eye (retina, pigmented layer of the retina and cornea);
- Forelimb;
- Ribs;
- Sternum;
- Hindlimb. |
- Immature Liver;
- Muscle layer stomach;
- Lung (Canalicular phase). |
- Stomach (zymogen and parietal cells);
- Intestinal loops;
- Lung(alveolar sacs, alveolus and bronchioles). |
- Intestine (Submucosa, Muscular mucosa, caliciform cells and intestinal glands);
- Bladder (muscular and serous layer, no distinction between internal longitudinal muscle and external circular muscle_;
Kidney [cortical and medullary region, renal corpuscle (glomerulus and Bowman's capsule), renal pelvis];
- Heart –(Atriums, ventricles, endocardium, myocardium and epicardium);
- Lobed thymus with cortical and medullary region enclosed by the capsule;
- Liver (hepatocytes, sinusoidal and lobular central vein);
- Lung (alveolus, bronchioles and alveolar sacs) |
