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The space between the visceral and parietal layers of lateral plate mesoderm is the primitive body cavity. When the lateral body wall folds, it moves ventrally and fuses at the midline. The body cavity closes, except in the region of the connecting stalk. Here, the gut tube maintains an attachment to the yolk sac.
The foregut develops from a cranial region of endoderm created after the initial cephalocaudal folding of the embryo. Starting at the stomodeum , a rapid expansion of the primitive gut forms the esophagus , from which the respiratory bud branches off. [ 2 ]
Finally, in adults, the head represents approximately 12% of the body length. The cephalocaudal trend is also the trend of infants learning to use their upper limbs before their lower limbs. The proximodistal trend, on the other hand, is the prenatal growth from 5 months to birth when the fetus grows from the inside of the body outwards.
Later, the lateral and middle prominences join forming the first of the three parts of the tongue. The terminal sulcus is a V-shaped line that separates the body of the tongue from the posterior part. [1] The corresponding nerve for the three prominences of the anterior tongue is the trigeminal nerve. The posterior tongue is innervated by the ...
Lateral (from Latin lateralis 'to the side') describes something to the sides of an animal, as in "left lateral" and "right lateral". Medial (from Latin medius 'middle') describes structures close to the midline, [2] or closer to the midline than another structure. For example, in a human, the arms are lateral to the torso.
The lower part shows a map view of the region. WG=wind gap. Red arrows: direction of lateral fold growth; Wind gap elevation decreases along lateral fold growth direction and curvatures of wind gaps convex towards lateral fold growth direction. The 2 fold segments grow towards each other and merge.
Lateral cephalometric radiograph, used for skull analysis Lateral cephalometric radiograph is a radiograph of the head taken with the x-ray beam perpendicular to the patient's sagittal plane. Natural head position is a standardized orientation of the head that is reproducible for each individual and is used as a means of standardization during ...
to (literally) lift up, especially a person: booster cushion*, a cushion used to increase the height of a seat (esp. in a car) to steal, especially from a retail establishment (i.e., shoplift) boot storage compartment of a car (US: trunk) footwear covering lower leg to kick something hard to start up a computer