Last-Cranial nerves & associated structures

Question 1

sensory function in the sense of smell; it goes from the olfactory epithelium fround in the nasal cavity to the olfactory lobe of the brain

Answer 1

Olfactory nerve (I)

Question 2

sensory nerve involved in vision; originates in the retina and goes to the optic chiasma where the two optic nerves cross; the nerve from the right eye goes to the left hemisphere and the nerve from the left eye goes to the right hemisphere

Answer 2

Optic nerve (II)

Question 3

mixed nerve which originates in the brain and goes to the eye; motor function s include eye movements, controlling the diameter of the pupil, focusing the lens, and raising the eye lid; sensory function is to provide information on the position of the eye

Answer 3

Oculomotor (III)

Question 4

mixed nerve which originates in the brain and goes to the eye; motor functions are lateral and inferior movement of the eye; its sensory function is to provide information on the position of the eye

Answer 4

Trochlear nerve (IV)

Question 5

mixed nerve that is divided into 3 parts; the divisions originate in the face, jaw, mouth, tongue and scalp and terminate in the pons; its sensory function is to transport information from various touch receptors on the face; motor function is chewing

Answer 5

Trigeminal nerve (V)

Question 6

mixed nerve which originates in the pons and innervates the lateral rectus eye muscles; its motor funciton is the lateral movement of the eye; sensory function is to provide information on the position of the eye

Answer 6

Abducens nerve (VI)

Question 7

mixed nerve w motor neurons originating in the pons; innervates the muscles of the face, scalp, neck, and salivary glands; sensory functions are reception of the taste stimuli for the anterior two-thirds of tongue and position of face and scalp muscles

Answer 7

Facial nerve (VII)

Question 8

mixed nerve originating in the inner ear and terminating in the thalamus; predominatly a sensory nerve which function sin hearing and equilibrium; motor functions include a response by the head and neck to changes in the equilibrium

Answer 8

Vestibulocochlear (VIII)

Question 9

mixed nerve w motor fibers originating in the medulla, and reveling to the pharyngeal region, middle and external ear, the rear of the tongue, and the carotid arteries; sensory function is involved in tast, touch by the tongue, the gag reflex and regulation of blood pressure and respirationg; motor function include control of the pharyngeal muscles in swallowing, speech, salivation, and gag reflex

Answer 9

Glossopharyngeal (IX)

Question 10

mixed nerve w motor fibers originating in the medulla and running to the muscles in the pharyngeal region, digestive, respiratory, and cardiovascular systems; motor functions involve the smooth muscles of the respiratory and digestive systems; involved in swallowing, coughing, and speech; sensory fibers originate in the thoracic and abdominal cavities, the pharyngeal region, and external ear; sensory functions involve sensations of hunger and fullness, sensations from the respiratory tract, pharyngeal region, and the external ear canal

Answer 10

Vagus (X)

Question 11

mixed nerve originating in the medulla and the upper cervical portions of the spical cord; it is primarily a motor nerve which controls voluntary swallowing and movements of the muscles of the head, neck, and shoulders; its sensory function is to provide information on the position of those muscles

Answer 11

Accessory nerve (XI)

Question 12

primarily a motor nerve originating in the upper cervical portions of the spinal cord and terminating in the muscle of the tongue; controls the movement of those muscles during food manipulation, swallowing and speech; its sensory function is to provide information on the aforementioned activities

Answer 12

Hypoglossal nerve (XII)