External Features of Brain, Transverse sections of Brain, Cranial Nerves Flashcards
What are the functions of the hypothalamus?
Sex drive
Thirst
Hunger
Sleep cycles
Works with pituitary to release hormones
What structures make up the basal ganglia?
Caudate Nucleus
Globus Pallidus
Putamen
What are the fibres called that connect the cerebral hemispheres with other parts of the brain (e.g. brainstem)?
Projection fibres
Which cereral artery supplies the internal capsule?
Middle cerebral artery
Functionally, what group of structures is the substantia nigra part of?
Basal ganglia
In relation to the substantia nigra, where can the red nucleus be found?
Posterior
What type of fibres are found within the cerebral peduncles?
Motor and sensory
What type of fibres make up the pyramids?
Motor
What nuclei are found within the olives?
Superior + inferior olivary nucleus
What are the distinguishing features of the cervical vertebrae?
Short + bifid spinous processes
Two foramen transversarium (transmit vertebral arteries)
What are the distinguishing features of the Thoracic vertebrae?
Spinous processes are angled inferiorly
Vertebral formen is circular
What are the distinguishing features of the lumbar vertebrae?
Very large vertebral bodies with kidney shape
No transverse foramina
How does the volume of grey matter change moving from superior to inferior aspects of the spinal cord?
The amount of gray matter increases as you move inferiorly down the spinal cord
What is the name of the hole in the middle of the spinal cord and what does it contain?
Central canal - CSF
Through which foramen does the glossopharyngeal nerve pass in the cranium?
Jugular foramen
Through which foramen does the vagus nerve pass?
Jugular foramen
Through which foramen does the accessory nerve pass?
Jugular foramen
Through which foramen does the hypoglossal nerve pass?
Hypoglossal canal
What type of fibres are present in the occulomotor nerve?
Motor and parasympathetic
What type of nerves are present in the optic nerve?
Special sensory
What type of nerves are present in occulomotor nerve?
Motor + parasympathetic
What type of nerves are present in the trochlear nerve?
Motor
What type of nerves are present in the abducens nerve?
Motor
What type of fibres are present in V1 of Trigeminal?
Sensory
What type of fibres are present in V2 of Trigeminal nerve?
Sensory
What type of nerve fibres are present in V3 of Trigeminal nerve?
Motor + sensory
Parasympathetic (submandibular + sublingual glands)
What type of fibres are present in the Facial nerve?
Motor (facial expression muscles)
Special sensory
General sensory (small area of outer ear)
Parasympathetic (Lacrimal, submandibular, sublingual gland)
What type of fibres are present in the vestibulocochlear nerve?
Special sensory
What type of fibres are present in the glossopharyngeal nerve?
Special sensory
General sensory
Motor (stylopharyngeus)
Parasympathetic (parotid gland)
What type of fibres are found in the Vagus nerve?
Motor (most of muscles of pharynx)
Parasympathetic (smooth muscles of GI tract)
Sensory - external acoustic meatus
Special sensory - Taste to epiglottis
What type of fibres are found within the accessory nerve?
Motor - SCM + Trapezius
What type of fibres are found within the hypoglossal nerve?
Motor
Which of the cranial nerves have parasympathetic innervation?
Occulomotor
Facial
Glossopharyngeal
Vagus
Which cranial nerves are attached directly to the brain?
Olfactory
Optic
Which cranial nerves are attached directly to the midbrain?
3 - occulomotor
What is the only cranial nerve to arise from the posterior aspect of the brain stem?
Trochlear
Which cranial nerves emerge from the pons?
5 - Trigeminal
Which cranial nerve arises from the pontomedullary junction?
Abducens
Facial
Vestibulocochlear
Which cranial nerves arise from the medulla?
9
10
11
12
Which cranial nerves are tested by the pupillary light reflex?
Optic
Occulomotor
Which cranial nerve is tested by touching over the cheek?
Maxillary branch of Trigeminal
Which cranial nerve is being tested if you ask the patient to stick their tongue out?
Hypoglossal