Inhoudsopgave
Wat is de Origo van de M Sternocleidomastoïdeus?
| musculus sternocleidomastoideus | |
|---|---|
| Spier | |
| Gegevens | |
| Origo | sternum en clavicula |
| Insertie | processus mastoideus en linea nuchae superior |
Wat is een origo en insertie?
De origo (oorsprong) is het begin van de spier, de insertie (aanhechting) is het einde van de spier. Iedere spier in het menselijk lichaam heeft daarnaast ook aansturing nodig vanuit de hersenen, de innervatie genoemd.
What is the mastoid process?
The mastoid process is a pyramidal bony projection from the posterior section of the temporal bone. The superior border of the mastoid portion of the temporal bone articulates with the parietal bone. It might be a good idea to learn the full anatomy of the skull before zoning in on specific structures like the mastoid practice.
What is a mastoid protuberance?
A conical protuberance of the posterior portion of the temporal bone that is situated behind the ear in humans and many other vertebrates and serves as a site of muscle attachment. Also called mastoid bone. American Heritage® Dictionary of the English Language, Fifth Edition.
What does the posterior border of the mastoid process articulate with?
The posterior border articulates with the occipital bone, and the anterior border is merged with the descending portion of the squamous section of the temporal bone. The petrosquamous suture runs vertically from the superior border of the mastoid process.
What causes mild mastoiditis?
Mastoiditis. It is commonly caused by untreated otitis media, where the infection tracks from the middle ear into the mastoid section of the temporal bone. The mastoid process is underdeveloped at birth which leaves the posterior auricular branch of the facial nerve (which ascends anterior to the mastoid process) superficial and unprotected.