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Liver
...  It is the biggest internal organ of the adult human body. The liver is divided into four different lobes. The lobe on the right side is visibly separated from the falciform of the small lobe in the Anterior portion. The lower vena cava forms a border between the caudate lobe and quadrate lobe in the inferior section near to the gall bladder. The falciform ligament plays a vital role in holding  ...

Hand Muscles
...  Without the retinaculum, it is impossible to coordinate the movements in your hands. Major Extrinsic Muscles To start a motion, the major extrinsic muscles must coordinate the movement. The Anterior muscles, flexi carpi ulnaris and the flexi carpi radialis flex the wrist, whereas the three posterior muscles, the extensor carpi radialis, extensor carpi radialis brevis and extensor carpi  ...

Eyeball
...  connective tissue makes the bulk of the coat. It provides a point of attachment for the muscles, serves as a protector for the interior parts of the eye and keeps the shape of your eyeball. In the Anterior part, the sclera becomes the cornea. The cornea has no blood vessels and permits the entry of light to the eye. Because the cornea is easy to remove and has no blood vessels, it is the first  ...

Spinal Nerves
...  canal in the coccyx. Branches of the Spinal Nerve When the spinal nerve leaves the intervertebral canal, it will branch out into two parts, which are the posterior primary ramus and the Anterior primary ramus. Both of them contain the motor and the sensory nerve fibers. The posterior primary ramus supplies the muscles and the skin at the back, whereas the Anterior primary ramus  ...

Hypothalamus
...  reaction only occurs when all of the endocrine organs are functioning normally. Growth Hormone Releasing Factor or GHRF GHRF is responsible in the control and release of Growth Hormone or GH in the Anterior pituitary. Growth hormone is responsible for the growth and development of all cells and tissues in the body. Gonadal Hormone Releasing Factor or GnHRF GnRF controls the release and  ...

Neck Muscles
...  ear to shoulder; flexion, meaning chin to sternum; and hypertension, meaning looking up. Here is the list of muscles in the neck and head area: Longus colli and capitis – this is found in the Anterior neck area and is used for flexion. They lie right over the cervical vertebrae and may be injured by whiplash. Infrahyoid and suprahyoid – these muscles are for opening the jaw and for  ...

Aortic Arch
...  portion between the ascending aorta and the descending aorta. This structure gives rise to the brachiocephalic trunk, the left common carotid artery and the left subclavian artery. The plura and Anterior margins of the lungs cover the arch of the aorta. The remains of the thymus also contribute to the covering of the arch of the aorta. The arch of the aorta starts at the height of the upper  ...

Brachial Nerve Plexus
...  Brachial Nerve Plexus refers to a group of nerve fibres that run from the spine. They are formed by the Anterior rami of the cervical nerve through the thoracic nerve. These nerves process to the neck, the armpit region and the arm. The Brachial plexus can be divided into different elements, and these include the division, roots, cords, and the trunks. The Anterior rami is responsible for  ...

External Carotid Arteries
...  it decreases in size and gives off a number of branches. Branches of the external carotid artery Four sets constitute the branches of the external carotid artery. These four sets are as follows: Anterior set, posterior set, ascending set, and the terminal set. The first set or Anterior set consists of the superior thyroid branch, the lingual branch and the external maxillary branch. The  ...

Spermatozoa
...  formed? There are several gonadal hormones involved in spermatogenesis or the formation of spermatozoa. The gonadal-releasing hormone or factor in the hypothalamus is responsible for stimulating the Anterior pituitary to increase the secretion of androgens and Follicle Stimulating Hormone or FSH. The FSH, in return, will enhance the production of testosterone. During puberty, the testosterone  ...


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