61 - FEMORAL TRIANGLE
BOUNDARIES OF FEMORAL CANAL :
It is bounded by:
(superiorly) the inguinal ligament
(medially) the medial border of the adductor longus muscle
(laterally) medial border of the sartorius muscle
Its floor is provided laterally by iliopsoas, medially by pectineus and adductor longus. Its roof is formed by the fascia lata.
The femoral triangle is shaped like the sail of a ship.
Its
60 - Inion
The inion is the most prominent projection of the occipital bone at the posterioinferior (lower rear) part of the skull. The ligamentum nuchae and trapezius muscle attach to it.
The term external occipital protuberance (protuberantia occipitalis externa) is sometimes used as a synonym, but more precisely the term "inion" refers to the highest point of the external occipital protuberance.
The
59 - Third ventricle
The third ventricle (ventriculus tertius) is one of four connected fluid-filled cavities comprising the ventricular system within the human brain. It is a median cleft between the two thalami, and is filled with cerebrospinal fluid (CSF).
It is in the midline, between the left and right lateral ventricles.
It communicates with the lateral ventricles anteriorly by the interventricular foramina
58 - Basal cistern
The interpeduncular cistern (basal cistern or Fossa interpeduncularis) is a wide cavity where the arachnoid extends across between the two temporal lobes.
It encloses the cerebral peduncles and the structures contained in the interpeduncular fossa, and contains the arterial circle of Willis.
Diagram showing the positions of the three principal subarachnoid cisternæ. Interpeduncular cistern
It encloses the cerebral peduncles and the structures contained in the interpeduncular fossa, and contains the arterial circle of Willis.
Diagram showing the positions of the three principal subarachnoid cisternæ. Interpeduncular cistern
57 - Sulci and Gyri of Brain
*Lesion in the broca's area (inferior frontal gyrus) causes broca's aphasia (motor aphasia/expressive aphasia).
*Lesion in the wernicke's aphasia (supramarginal gyrus) of the parietal lobe and upper part of temporal lobe.
56 - AIIMS May 2010 Anatomy Mcqs
1. Middle superior alveolar nerve is a branch of
a) Mandibular division of trigeminal nerve
b) Palatine division of maxillary nerve
c) Anterior nasal division of maxillary nerve
d) Inferior alveolar nerve
answer c. Anterior nasal division of maxillary nerve.
2. All the following muscles retracts the scapula EXCEPT
a) Trapezius
b) Rhomboid major
c) Rhomboid minor
d) Levator scapulae
answer d.
a) Mandibular division of trigeminal nerve
b) Palatine division of maxillary nerve
c) Anterior nasal division of maxillary nerve
d) Inferior alveolar nerve
answer c. Anterior nasal division of maxillary nerve.
2. All the following muscles retracts the scapula EXCEPT
a) Trapezius
b) Rhomboid major
c) Rhomboid minor
d) Levator scapulae
answer d.
55 - Pain Insensitive and Pain Sensitive structures in Brain
A. Pain Insensitive structures in Brain : (Intracranial)
1. Brain parenchyma
2. Ependyma
3. Choroid plexus
4. Piamatter
5. Arachnoid
6. Dura over convexity of skull ( Dura around vascular sinuses and vessels is sensitive to pain)
B. Pain Sensitive structures in Brain :
B1. Intracranial :
1. Cranial venous sinuses with afferent veins
2. Arteries at base of brain and arteries of dura including
1. Brain parenchyma
2. Ependyma
3. Choroid plexus
4. Piamatter
5. Arachnoid
6. Dura over convexity of skull ( Dura around vascular sinuses and vessels is sensitive to pain)
B. Pain Sensitive structures in Brain :
B1. Intracranial :
1. Cranial venous sinuses with afferent veins
2. Arteries at base of brain and arteries of dura including
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