ANA 303 PQ Flashcards
Broca’s area is found in the inferior frontal gyrus (describe its location)
True
Frontal lobe, Brodmann area 44 and 45 usually on the left side of the brain
The Broca’s area is only found on one hemisphere of the brain so if damaged would impair the ability of an individual to speak
True
Grey matter has many cells containing myelin sheath which gives its grey color
false
The anterior association area is primarily involved in intellectual reasoning and socially acceptable behaviour
False
The cerebral hemispheres are cound by a thick band of association fibres called corpus callosum
True
The corticospinal, and spinothalamic tracts as well as the medial, lateral, trigeminal and spinal menisci are examples of projection fibres
True
The fissure of Rolando aka central sulcus arises in the middle of each hemisphere, and separates the frontal lobe from the parietal, while the Sylvian fissure separates the cerebrum from the cerebellum
False
Commissural fibers like anterior and hippocampal commissures are involved in inter-hemispheric communication
True
Uncaltranstentorial herniation can be seen pushing through the horizontal fissure that separates the cerebrum from the cerebellum
True
Ventricular system
They arise as craniocaudal dilatations of the neural tube.
True
The prosencephalic dilatation leads to the formation of the lateral ventricles and third ventricle.
True
The lateral ventricles are paired laterally and medially.
False
The blood-CSF barrier is formed by choroid plexus’ endothelial cells and its sinusoidal capillaries.
True
The right and left lateral apertures of Luschka carries CFS from the fourth ventricle to the subarachnoid space via the cistern of the great cerebral vein.
False
Communicating hydrocephalus is due to
obstruction in the Foramen of Magendie
False
During examinition at a clinic, it was
noticed that the size of an infant’s head
was larger than normal expected of
age. Radiological examination indicate
an obstruction of the cerebral aqueduct
draining the fourth ventricle
True
Ventricles
Lined by a specialized stratified
squamous neurospithelium called
ependyma
False
The membranes that surround the cisterns in the cranial
cavity are;
- Dura and arachnoid mater
- Dura mater and ependymal cell layer
- Neuronal cell membrane and pia mater
- Pia and arachnoid mater
- Periosteal and meningeal layers of dura mater
- Dura and arachnoid mater F
- Dura mater and ependymal cell layer F
- Neuronal cell membrane and pia mater F
- Pia and arachnoid mater T
- Periosteal and meningeal layers of dura mater F
Regarding spinal cord lesions;
24.
Lesions of a single posterior root will cause pain in the skin and muscles innervated by that root
True
25.
Damage to the anterolateral system Will cause contralateral loss of pain, temperature and crude touch below the level of the lesion.
True
26.
Damage to the dorsal column causes ipsilateral disruption of proprioception and pressure above the level of the lesion
False, below
27.
Lesion of a single anterior root will cause paralysis to any muscle supplied exclusively by the root
True
A 50-year-old man was admitted to the emergency room after a head injury resulting from a motorcycle accident. The patient was diagnosed as having an accumulation of fluid in the cranial cavity. Which space will this quid likely occupy?
28.Sub-pia space
29Subarachnoid space
30. Sub-meningeal space
31. Epidural space
32. Sub-dural space
28.Sub-pia space F
29Subarachnoid space T
30. Sub-meningeal space F
31. Epidural space F
32. Sub-dural space F