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Though the parotid gland is the largest, it provides only 25% of the total salivary volume. The serous cell predominates in the parotid, making the gland secrete a mainly serous secretory product. [10] The parotid gland also secretes salivary alpha-amylase (sAA), which is the first step in the decomposition of starches during mastication. It is ...
The parotid duct is formed when several interlobular ducts, the largest ducts inside the parotid gland, join.It emerges from the parotid gland. It runs forward along the lateral side of the masseter muscle for around 7 cm. [2] In this course, the duct is surrounded by the buccal fat pad.
The parotid fascia is described as consisting of an outer leaf and an inner leaf that are formed by a split of the deep cervical fascia: the outer leaf represents parotideomasseteric fascia and extends superiorly to the zygomatic arch; the parotid fascia is said to be considered the parotid capsule where it covers the gland while anteriorly to ...
The submandibular glands (previously known as submaxillary glands) are a pair of major salivary glands located beneath the lower jaws, superior to the digastric muscles. [6] The secretion produced is a mixture of both serous fluid and mucus , and enters the oral cavity via the submandibular duct or Wharton duct. [ 7 ]
Branches of the facial nerve (which gives the motor supply to the muscles of facial expression) run through the substance of the parotid gland and so this is manifest as a transient facial palsy. The pterygomandibular space is one of the possible spaces into which a tooth may be displaced into during dental extraction , e.g. of a maxillary ...
The parotid fascia (or parotid capsule [1]) is a tough [2] fascia enclosing the parotid gland. [1] [2] [3] It has a superficial layer and a deep layer.[1]Current scientific knowledge regards the superficial layer to be continuous with the fascia of the platysma, and the deep layer to be derived from the deep cervical fascia.
Each parotid gland is located high in the neck just below the ears. [1] A salivary duct by which saliva is secreted (produced and released), runs through the inside of each cheek from each gland. Furthermore, the extratemporal (outside temporal bone) facial nerve and its subsidiaries run through the parotid gland and innervate (supply nerves to ...
The external jugular vein commences in the substance of the parotid gland, on a level with the angle of the mandible, and runs perpendicularly down the neck, in the direction of a line drawn from the angle of the mandible to the middle of the clavicle superficial to the sternocleidomastoid muscle.