Forensic medicine

05/02/2022

The circle of Willis encircles the stalk of the pituitary gland and provides important communications between the blood supply of the forebrain and hindbrain (ie, between the internal carotid and vertebro-basilar systems following obliteration of primitive embryonic connections).

The circle of Willis begins to form when the right and left internal carotid artery (ICA) enters the cranial cavity and each one divides into two main branches: the anterior cerebral artery (ACA) and middle cerebral artery (MCA).

The anterior cerebral arteries are then united and blood can cross flow by the anterior communicating (ACOM) artery. The ACAs supply most midline portions of the frontal lobes and superior medial parietal lobes. The MCAs supply most of the lateral surface of the hemisphere, except the superior portion of the parietal lobe (via ACA) and the inferior portion of the temporal lobe and occipital lobe. The ACAs, ACOM, and MCAs form the anterior half, better known as the anterior cerebral circulation. Posteriorly, the basilar artery (BA), formed by the left and right vertebral arteries, branches into a left and right posterior cerebral artery (PCA), forming the posterior circulation. The PCAs mostly supply blood to the occipital lobe and inferior portion of the temporal lobe.

05/02/2022

An abrasion is an injury to the skin in which there is removal of the superficial epithelial layer of the skin (the epidermis) by friction against a rough surface, or destruction of the superficial layers by compression.

Antemortem abrasions have a reddish-brown appearance and heal without scarring.

Abrasions produced after death are yellow and translucent with a parchment-like appearance.


There are three types of abrasions:
1. Scrape or brush abrasions
2. Impact abrasions
3. Patterned abrasions

26/01/2021

Chest X-ray

09/01/2021

https://link.springer.com/article/10.1007/s12024-020-00348-8

S*x estimation from isolated or fragmented bones is a cornerstone in medicolegal identification. The current study aimed to estimate s*x from the lengths of the coronal and sagittal sutures in a sample of Egyptians. The study was performed on a total of 80 adult cadavers (48 males and 32 females) du...

30/12/2020

1:brainstem
(oculomotor nerve)

2:pons
(trigeminal nerve,abducent nerve,facial nerve and intermediate nerve,vestibulocochlear nerve)

3: medulla oblongata
(hypoglassal, accessory,vagus, glossopharyngeal nerve)

26/12/2020

23/12/2020

Cardiac tamponade is the accumulation of excess fluid within the pericardial space, resulting in impaired cardiac filling, reduction in stroke volume, and epicardial coronary artery compression with resultant myocardial ischemia

06/12/2020

✍️Mechanism of bullet wound production

10/08/2020

features of smotering in forensic medicine

24/03/2020

Throttling