Which describes the foramen magnum quizlet?
Which describes the foramen magnum quizlet?
The foramen magnum is the opening in the skull, which the spinal chord passes through.
What structure goes through the foramen magnum?
The foramen magnum is the largest of the cranial foramina. It lies in the occipital bone within the posterior cranial fossa, and allows the passage of the medulla and meninges, the vertebral arteries, the anterior and posterior spinal arteries and the dural veins.
What begins at the foramen magnum?
human skull …has a central opening (foramen magnum) to admit the spinal cord. The parietal and temporal bones form the sides and uppermost portion of the dome of the cranium, and the frontal bone forms the forehead; the cranial floor consists of the sphenoid and ethmoid bones.
What is the function of the foramen?
Foramina inside the body of animals typically allow muscles, nerves, arteries, veins, or other structures to connect one part of the body with another.
What is the largest foramen in the human body?
The largest foramen in the body is the obturator foramen, which is in the pelvic bone.
What is foramen magnum meningioma?
Specifically, the tumor was a rare foramen magnum meningioma, meaning that it was located within the foramen magnum, the large opening in the occipital bone at the base of the skull. The tumor was benign, meaning it would not metastasize and spread.
What does foramen magnum patent mean?
2) The foramen magnum is the opening in the bottom of the skull through which the spinal cord exits. “Widely patent” means that is is of normal size. 3) This term means there is a bit of extra bone growth around the openings in the spinal column through which the nerve roots from the spinal cord emerge.
What foramen does the Abducens nerve pass through?
Cranial Nerve Review Table
| Cranial Nerve | Foramen |
|---|---|
| VI-Abducens | superior orbital fissure |
| VII-Facial (Major motor branches: Temporal, Zygomatic, Buccal, Mandibular, Cervical, and Posterior Auricular) | internal acoustic meatus-> facial canal-> stylomastoid foramen |
| facial canal-> middle ear-> chorda tympani-> petrotympanic fissure |
What runs through foramen Lacerum?
Function. The artery of pterygoid canal, the nerve of pterygoid canal and some venous drainage pass through the foramen lacerum. Furthermore, one of the terminal branches of the ascending pharyngeal artery (itself a branch of the external carotid artery) passes through the foramen lacerum.
What foramen does V1 pass through?
Cranial Nerve Review Table
| Cranial Nerve | Foramen | Region Entered |
|---|---|---|
| V1-Trigeminal opthalmic (Major branches: Lacrimal, Frontal, Nasociliary, and Meningeal branch) | superior orbital fissure | orbit |
| V2-Trigeminal maxillary (Major branches: Infraorbital, Zygomatic, Nasopalatine, and Palatine branch) | foramen rotundum | pterygopalatine fossa |
What is Stylomastoid foramen?
The stylomastoid foramen is between the styloid and mastoid processes of the temporal bone. It is the termination of the facial canal, and transmits the facial nerve and stylomastoid artery. This definition incorporates text from the wikipedia website – Wikipedia: The free encyclopedia. (
What nerve passes through the jugular foramen?
The glossopharyngeal, vagus, and accessory nerves pass through the jugular foramen on the medial side of the jugular bulb.
What opening does cranial nerve I pass through?
The olfactory nerve (I), passes through perforations in the cribriform plate part of the ethmoid bone. The nerve fibres end in the upper nasal cavity. The optic nerve (II) passes through the optic foramen in the sphenoid bone as it travels to the eye.
What is the sixth nerve?
It’s also known as the abducens nerve. This condition causes problems with eye movement. The sixth cranial nerve sends signals to your lateral rectus muscle. This is a small muscle that attaches to the outer side of your eye. When this muscle contracts, your eye moves away from your nose.
How do you test for the sixth cranial nerve?
The abducens nerve is examined in conjunction with the oculomotor and trochlear nerves by testing the movements of the eye. The patient is asked to follow a point with their eyes (commonly the tip of a pen) without moving their head.
Can diabetes cause sixth nerve palsy?
Sixth (abducent) cranial nerve palsy is a typical yet infrequent mononeuropathic complication of diabetes. It usually causes considerable diplopia, which can be debilitating and significantly impair the everyday and professional activity of afflicted individuals.