Table of Contents
- 1 What passes through the jugular fossa?
- 2 What does the jugular foramen contain?
- 3 Where is the jugular foramen located and which structure passes through it?
- 4 Where does the jugular vein pass through?
- 5 When I press my neck my tinnitus stops?
- 6 Does everyone have a jugular bulb?
- 7 Is the hypophyseal fossa an enclosed compartment?
What passes through the jugular fossa?
The carotid ridge separates the carotid canal and jugular foramen. Meningeal branches of the ascending pharyngeal and occipital arteries enter the jugular foramen. The glossopharyngeal, vagus, and accessory nerves pass through the jugular foramen on the medial side of the jugular bulb.
What does the jugular foramen contain?
The jugular foramen is usually divided in 2 portions (6): The pars nervosa, housing the glossopharyngeal nerve and its tympanic branch (Jacobson’s nerve), the inferior petrosal sinus and the meningeal branches of the ascending pharyngeal artery; and the pars vascularis, containing the sigmoid sinus, vagus (and its …
What blood vessel runs through the jugular foramen?
The inferior petrosal sinus travels from the cavernous sinus, usually courses between the glossopharyngeal nerve and vagus and accessory nerves, and eventually joins the jugular bulb medially. In addition, the occipital artery gives rise to several meningeal branches that occasionally pass through the jugular foramen.
What is the function of the jugular bulb?
The jugular bulb (JB) is the confluence of the lateral venous sinuses situated in the jugular fossa. It drains extracranially to the internal jugular vein as it passes through the jugular foramen of the posterior cranial fossa. The precise location of this structure within the temporal bone is variable.
Where is the jugular foramen located and which structure passes through it?
A jugular foramen is one of the two (left and right) large foramina (openings) in the base of the skull, located behind the carotid canal. It is formed by the temporal bone and the occipital bone….
| Jugular foramen | |
|---|---|
| Part of | skull |
| System | skeletal system |
| Identifiers | |
| Latin | Foramen jugulare |
Where does the jugular vein pass through?
jugular vein, any of several veins of the neck that drain blood from the brain, face, and neck, returning it to the heart via the superior vena cava.
Where is the jugular fossa located?
petrous temporal bone
The jugular fossa is a depression situated on the inferior surface of the petrous temporal bone posterior to the inferior opening of the carotid canal. It lodges the jugular bulb. Anteriorly lies the jugular foramen.
What happens if jugular foramen is damaged?
Clinical features depend on the structures affected by JFS[21]: Vagus: Vagal compression initially causes paralysis of the laryngeal muscles leading to hoarseness and a nasal pitch. If the nerve gets compressed further, it results in unilateral paralysis of the soft palate and deviation of the uvula to the normal side.
When I press my neck my tinnitus stops?
The last maneuver of gentle neck pressure, which occludes the ipsilateral jugular vein, is particularly important. If the sound stops, it is almost certainly due to venous sinus stenosis or another venous sinus cause, such as dehiscent jugular plate or diverticulum.
Does everyone have a jugular bulb?
The jugular bulb is a venous structure, that can be located close to the inner ear. The jugular bulb is not present at birth, but develops over time. The size and location is somewhat dependent on pneumatization of the mastoid bone.
Jugular fossa. The jugular fossa is a depression situated on the inferior surface of petrous temporal bone posterior to the inferior opening of carotid canal. It lodges the jugular bulb. Anteriorly, lies the jugular foramen.
What is posterolateral to the jugular foramen?
Lateral to the jugular foramen is the styloid process, which separates it from the temporomandibular joint. The stylomastoid foramen, where the facial nerve exits, is located just posterior to the base of the styloid process and a few millimeters posterolateral to the jugular foramen.
What causes leslesions of the jugular foramen?
Lesions affecting the jugular foramen may arise from its intrinsic contents or from invasion by adjacent contiguous structures.
Is the hypophyseal fossa an enclosed compartment?
This fossa is limited laterally and superiorly by reflections of the dura mater and anteriorly, posteriorly, and inferiorly by the sella turcica, a depression in the body of the sphenoid bone. The hypophyseal fossa is not an enclosed compartment.