The trochlear nerve is unique among the cranial nerves in several respects: It is the smallest nerve in terms of the number of axons it contains. It has the greatest intracranial length. It is the only cranial nerve that exits from the dorsal (rear) aspect of the brainstem. It innervates a muscle, ... See more The trochlear nerve , (lit. pulley-like nerve) also known as the fourth cranial nerve, cranial nerve IV, or CN IV, is a cranial nerve that innervates a single muscle - the superior oblique muscle of the eye (which operates through the See more Vertical diplopia Injury to the trochlear nerve cause weakness of downward eye movement with consequent vertical diplopia (double vision). The affected eye drifts upward relative to the normal eye, due to the unopposed actions … See more • Blumenfeld H. Neuroanatomy Through Clinical Cases. Sinauer Associates, 2002 • Brodal A. Neurological Anatomy in Relation to Clinical Medicine, 3rd ed. Oxford University … See more • hier-449 at NeuroNames • oph/697 at eMedicine - "Trochlear Nerve Palsy" • MedEd at Loyola Grossanatomy/h_n/cn/cn1/cn4.htm See more The trochlear nerve provides motor innervation to the superior oblique muscle of the eye, a skeletal muscle; the trochlear nerve thus carries axons of general somatic efferent type See more Homologous trochlear nerves are found in all jawed vertebrates. The unique features of the trochlear nerve, including its dorsal exit from the brainstem and its contralateral innervation, are seen in the primitive brains of sharks. See more • Dura mater and its processes exposed by removing part of the right half of the skull, and the brain. • Hind- and mid-brains; postero-lateral view. See more WebApr 21, 2024 · Answer: The trochlear nerve is a cranial nerve that sends motor information to the superior oblique muscle of the eye. Of the 12 cranial nerves that exit out of the central nervous system, the trochlear nerve (CN IV) is responsible for only one function. It is a somatic efferent nerve that innervates the superior oblique muscle, which is ...
Neuroanatomy, Cranial Nerve 4 (Trochlear) Article - StatPearls
WebCranial nerve IV functions to depress the eye when the eye is adducted by stimulation of the superior oblique muscle. Failure of the eye to depress is an indication of paralysis. In an attempt to restore binocular vision, the … WebThe oculomotor nerve is one of 12 sets of cranial nerves. Many of these nerves are part of the autonomic nervous system. The autonomic nervous system supplies (innervates) organs, like your eyes. The oculomotor nerve is the third cranial nerve (CN III). It allows movement of the eye muscles, constriction of the pupil, focusing the eyes and the ... pete transfer mineral point wi
Table of cranial nerves - Wikipedia
WebOct 27, 1995 · According to Marie Hilliard of DPH, IV nurses function in two separate contexts (1) hospitals and (2) health care facilities that are not hospitals such as chronic … WebThe trochlear nerve is one of 12 sets of cranial nerves. It is part of the autonomic nervous system, which supplies (innervates) many of your organs, including the eyes. This nerve … WebAug 15, 2024 · Key facts about the corticonuclear and corticospinal tracts; Corticonuclear tract: Definition: motor pathway from the motor cortex of the brain to the motor nuclei of cranial nerves within the brainstem. Function: responsible for voluntary movement of the muscles of the face (CN.VII), head and neck (CN. XI). Also involved in phonation, … pete toy