36 - Musculocutaneous nerve

PATH OF THE NERVE :

The musculocutaneous nerve arises from the lateral cord of the brachial plexus, opposite the lower border of the Pectoralis minor, its fibers being derived from C5, C6, C7.

It penetrates the Coracobrachialis muscle and passes obliquely between the Biceps brachii and the Brachialis, to the lateral side of the arm; a little above the elbow it pierces the deep fascia lateral

35 - Renal corpuscle ( Glomerulus ) Microscopic anatomy

A – Renal corpuscle
B – Proximal tubule
C – Distal convoluted tubule
D – Juxtaglomerular apparatus
1. Basement membrane (Basal lamina)
2. Bowman's capsule – parietal layer
3. Bowman's capsule – visceral layer
3a. Pedicels (podocytes)
3b. Podocyte

4. Bowman's space (urinary space)
5a. Mesangium – Intraglomerular cell
5b. Mesangium – Extraglomerular cell
6. Granular cells (Juxtaglomerular cells)

33 - Nerve supply of the Tongue

Motor supply :

All the intrinsic muscles, except the palatoglossus are supplied by the hypoglossal nerve. the palatoglossus is supplied by the cranial part of accessory nerve through the pharyngeal plexus .

Sensory supply :

Anterior 2/3rd of the tongue - lingual nerve is the nerve of general sensation and the chordatympani is the nerve of taste for the anterior two-thirds of the tongue .

32 - Hemivertebrae

*First read this question that appeared in the May 2006 AIIMS Medical Postgraduation Entrance Examination .


Q: Lumbar hemivertebra results due to the abnormal development of ?


a. dorsal sclerotome
b. intermediate cell mass
c. notochord
d. ventral sclerotome


answer d. ventral sclerotome

Now after you have seen the answer, u have to know what hemivertebra actually means .


The congenital

31 - Facial nerve subdivisions and functions

Subdivisions and Functions of the Facial Nerve.



Facial Nerve Subdivision Function

Branchial motor Muscles of facial expression
Posterior belly of digastric muscle
Stylohyoid muscle
Stapedius muscle
Visceral motor Salivation—lacrimal, submandibular, and sublingual
Nasal mucosa or mucous membrane
General sensory Sensory to auricular concha
External auditory

30 - PGI Chandigarh December 2002 Anatomy Mcqs with answers

1q: which of the following are draining channels of cavernous sinus ?
a. inferior petrosal sinus
b. inferior ophthalmic vein
c. sphenoparietal sinus
d. middle cerebral vein
e. superior ophthalmic vein


answer a , e . inferior petrosal sinus drains into internal jugular vein and superior ophthalmic vein drains into facial vein

2q: Recurrent laryngeal nerve has the following course in

29 - AIIMS November 2004 anatomy mcqs with answers

1q: a posteriorly perforating ulcer in the pyloric antrum of the stomach is likely to produce initial localized peritonitis or abscess formation in the ?


a. greater sac
b. left subhepatic and hepatorenal spaces ( pouch of Morrison )
c. omental bursa
d. right subphrenic space


answer c . omental bursa

2q: knowledge of the segmental cutaneous innervation of the skin of the lower extremity is