Three nerves control the eye muscles. These are the oculomotor nerve, which controls the majority of the muscles, the trochlear nerve, which controls the superior oblique muscle, and the abducens nerve, which controls the lateral rectus muscle. Pls mark it the brainliest
Cranial nerves III (CNIII) (oculomotor), IV (trochlear), and VI (abducens) control the position of the eyeballs; CNIII influences the position of the eyelids and the size of the pupils.
The accessory nerve is a cranial nerve that supplies the ... In the neck, the accessory nerve crosses the internal jugular vein around the level of the posterior ...
The corneal blink reflex is caused by a loop between the trigeminal sensory nerves and the facial motor (VII) nerve innervation of the orbicularis oculi muscles.
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secondary schoolbiology 5+3 pts
justify there is evidence of fatal science among chordates
ask for details followreport by rawindraprasad2 29.04.2018
traditional metazoan phylogeny classifies the vertebrata as a subphylum of the phylum chordata, together with two other subphyla, the urochordata (tunicata) and the cephalochordata. the chordata, together with the phyla and hemichordata, comprise a major group, the deuterostomia. chordates invariably possess a notochord and a dorsal neural tube. although the origin and evolution of chordates has been studied for more than a century, few authors have intimately discussed taxonomic ranking of the three chordate groups themselves. accumulating evidence shows that and hemichordates form a clade (the ambulacraria), and that the chordata, cephalochordates diverged first, with tunicates and vertebrates forming a sister group. chordates share tadpole-type larvae containing a notochord and hollow nerve cord, whereas ambulacrarians have dipleurula-type larvae containing a hydrocoel. we propose that an evolutionary occurrence of tadpole-type larvae is fundamental to understanding mechanisms of chordate origin. protostomes have now been reclassified into two major taxa, the ecdysozoa and lophotrochozoa, whose developmental pathways are characterized by ecdysis and trochophore larvae, respectively. consistent with classification, the profound dipleurula versus tadpole larval differences merit a category than the phylum. thus, it is recommended that the ecdysozoa, lophotrochozoa, ambulacraria and chordata be classified at the superphylum level, with the chordata further subdivided into three phyla, on the basis of their distinctive characteristics.
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