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5 ημέρες πριν · The spinal nerve extends from the inferior end of the brain stem and passes through the foramen magnum of the skull into the neck. In the neck, the spinal cord passes through the vertebral foramen of the cervical vertebrae, which surround and protect its delicate nervous tissue.
18 Οκτ 2023 · The main artery supplying the eye is the ophthalmic artery, while the main nerves are the optic (CN II), oculomotor (CN III), trochlear (CN IV), trigeminal (CN V), and abducens (CN VI) cranial nerves. They reach the eye via three holes located at the back wall of the orbit.
30 Οκτ 2023 · The most important arteries and nerves of the head and neck are the following: Internal and external carotid arteries; Vertebral arteries; Thyrocervical trunk; Cranial nerves; Cervical plexus; Head and cervical lymph nodes; In this page, we’re going to study each of the above structures together with their respective branches.
The Head. Nerves of the Head. The nerves of the head include the sympathetic and parasympathetic innervation to the head and neck, as well as the three branches of the trigeminal nerve: ophthalmic, maxillary and mandibular. The sympathetic innervation begins in the spinal cord.
30 Οκτ 2023 · Nerves of the head. Since the head is such a ‘vast’ anatomical region, it’s innervation is quite extensive. For the purposes of this page, we’ll only talk about the relevant nerves for the previously mentioned anatomical structures. The nerves in the head originate from three main sources: Trigeminal nerve (CN V) Facial nerve (CN VII)
posterior neck muscles: skin of the posterior surface of the neck : muscles innervated by this nerve develop from epimeres in the embryo: oculomotor n. oculomotor nuclei of the midbrain (extraocular muscles); accessory oculomotor nucleus (nucleus of Edinger-Westphal - preganglionic parasympathetic) superior br., inferior br.
Stratum granulosum, Stratum spinosum, Stratum germinativum, also called stratum basale. The deepest layer is the miotic layer, stratum basale producing daughter cells by mitosis. Mouth. The mouth, also called the oral cavity, is the entranceway into the digestive system containing both primary and accessory organs of digestion. Teeth.
