It is further subdvided into the vertical part V3v passing vertically upwards, crossing the C2 root and entering the foramen transversarium of C1, and the horizontal part V3h, curving medially and posteriorly behind the superior articular process of the atlas, the anterior ramus of the first cervical nerve being on its medial side ; it then lies in the groove on the upper surface of the posterior arch of the atlas, and enters the vertebral canal by passing beneath the posterior atlantoöccipital membrane.

* Anterior ethmoid nerve — conveys sensation in the anterior ( front ) half of the nasal cavity: ( a ) the internal areas of the ethmoid sinus and the frontal sinus ; and ( b ) the external areas, from the nasal tip to the rhinion: the anterior tip of the terminal end of the nasal-bone suture.

In comparing the skulls of carnivores and herbivores, it can be seen that the shearing force of the temporalis is somewhat more important to carnivores, which have more room on the braincase ( this is not unrelated to carnivoran intelligence ) and commonly develop a sagittal crest ( running from posterior to anterior on the skull ), providing yet additional room for temporalis attachment.

This is first seen as the ultimobranchial body, which joins the primordial thyroid gland during its descent to its final location in the anterior neck.

* a triangular shaped forehead seen from top view leading to a smaller anterior cranial fossa

Activating neurons that have V1 receptors, V1Rs, cause field potentials that have weak, fluctuating responses that are seen the anterior of the accessory olfactory bulb, AOB.

A single adult male specimen had a white beak and white on the anterior portion of the head, with white, linear scars criss-crossing its body, while the juvenile seen off Western Australia had a mask covering its eyes and extending unto its melon and upper beak.

In particular, anterior spondylitis is seen at level L1 / L2 and an inflammatory Andersson lesion at the upper vertebral endplate of L3.

One sign that may be seen in slit lamp examination is a " flare ", which is when the slit-lamp beam is seen in the anterior chamber.

* White blood cells ( leukocytes ) ( seen as tiny white dots, clinically termed cells ) and protein ( resulting in a grey or near-white haze, clinically termed flare ) leak into the anterior chamber.

* digital pressure is applied to the abdominal wall, which can be seen indenting the anterior gastric wall by the endoscopist.

Furthermore, TMA is caused by lesions in cortical motor areas of the brain as well as lesions in the anterior portion of the basal ganglia, and can be seen in patients with expressive aphasia.

Pandorina shows the beginnings of the colony polarity and differentiation seen in Volvox since the anterior cells have larger eyespots.

Tscherning referred to this as the sixth image ( the fifth image being formed by reflections from the anterior surfaces of the lens and cornea to form an image too far in front of the retina to be visible ) and noted it was much fainter and best seen with a relaxed emmetropic eye.

Macroscopically, these lines can be seen on the labial surface or lip side of anterior or front teeth as horizontal lines on the tooth crown, also known as " imbrication lines ".

* Slit lamp flare, when the beam of light is seen in the anterior chamber of the eye

Finally, comparative studies in neuroanatomy demonstrate that advancements in the size and connectivity seen in human brains primarily relates to the evolutionarily younger anterior portions of the frontal lobes as opposed to the more ‘ ancient ’ posterior areas.

An anterior remnant of the hyaloid artery can be seen in some people as Mittendorf's dot, a small pinpoint-like scar on the posterior surface of the lens.

The infraorbital canal usually projects into the cavity as a well-marked ridge extending from the roof to the anterior wall ; additional ridges are sometimes seen in the posterior wall of the cavity and are caused by the alveolar canals.

The tendon of flexor carpi ulnaris can be seen on the anterior of the distal forearm.

The abalone shell has a series of holes near the anterior margin, that are respiratory apertures for the venting of water from the gills and for releasing sperm and eggs into the water column at the appropriate time.

The zona fasciculata secretes a basal level of cortisol but can also produce bursts of the hormone in response to adrenocorticotropic hormone ( ACTH ) from the anterior pituitary.

Next to these is a curved, suberect canine, followed after an interval by an isolated minute and often deciduous simple conical premolar ; then a contiguous series of one premolar and three molars, which differ from those of Camelus in having a small accessory column at the anterior outer edge.

Impulses are then transmitted to nerve fibers that terminate in lamina V, also in the dorsal horn, synapsing with neurons that join fibers from the fast pathway, crossing to the opposite side via the anterior white commissure, and traveling upwards through the anterolateral pathway.

Pain-related activity in the thalamus spreads to the insular cortex ( thought to embody, among other things, the feeling that distinguishes pain from other homeostatic emotions such as itch and nausea ) and anterior cingulate cortex ( thought to embody, among other things, the motivational element of pain ); and pain that is distinctly located also activates the primary and secondary somatosensory cortices.

The anterior divisions of the lumbar nerves, sacral nerves, and coccygeal nerve form the lumbosacral plexus, the first lumbar nerve being frequently joined by a branch from the twelfth thoracic.

Hormonal output from the thyroid is regulated by thyroid-stimulating hormone ( TSH ) produced by the anterior pituitary, which itself is regulated by thyrotropin-releasing hormone ( TRH ) produced by the hypothalamus.

An erogenous zone commonly referred to as the G-Spot ( also known as the Gräfenberg Spot ) is typically defined as being located at the anterior wall of the vagina, about five centimeters in from the entrance.

Structure diagram of the human heart from an anterior view.

Air is stored in both the posterior and anterior sacs between respiration cycles, and moves continuously from the posterior to the anterior of the lungs throughout respiration.

Two others comprise the output to the thalamus, forming two separate channels: one through the internal segment of the globus pallidus to the ventral oralis nuclei of the thalamus and from there to the cortical supplementary motor area ( SMA ) and another through the substantia nigra to the ventral anterior nuclei of the thalamus and from there to the frontal cortex and the occulomotor cortex.

In adult lampreys, a separate respiratory tube develops beneath the pharynx proper, separating food and water from respiration by closing a valve at its anterior end.

In Aspidosiphon and Lithacrosiphon the anal shield is restricted to the dorsal side, causing the introvert to emerge at an angle, whereas it surrounds the anterior trunk in Cloeosiphon with the introvert emerging from its center.

The anterior end is called the cephalic lobe, which bears from 1 to over 200 thin branchial ciliated tentacles, each bearing tiny side branches known as pinnules.

They divide into two at a point closer to the anterior end from the middle.

There can be anything from one to over a hundred metanephridia for excreting nitrogenous waste, which typically open near the anterior end of the animal.

They range from a few millimeters long with twenty to thirty cells that include anterior attachment cells and a long central reproductive cell called an axial cell.

Priapulids are cylindrical worm-like animals, ranging from in length, with a median anterior mouth quite devoid of any armature or tentacles.

It consists of cutting the connections to and from the prefrontal cortex, the anterior part of the frontal lobes of the brain.

There are significant projections to the thalamus ( ventral lateral and ventral anterior nuclei ), superior colliculus, and other caudal nuclei from the pars reticulata ( the nigrothalamic pathway ).

They are long, and their anterior and posterior tubercles are fused into one mass ; the foramen transversarium is directed from below, upward and backward.

At birth, the anterior arch consists of cartilage ; in this a separate center appears about the end of the first year after birth, and joins the lateral masses from the sixth to the eighth year.