Definition:
A network of spinal nerves that originates in the back of the neck, extends through the axilla (armpit), and gives rise to nerves to the upper limb. The brachial plexus is formed by the union of portions of the 5th through 8th cervical nerves (C5-C8) and the first thoracic nerve (T1), all of which come from the spinal cord.
Function:
The …

The arterial tree begins from the aorta. After the aorta leaves the heart, it divides into the ascending
aorta, the aortic arch, and the descending aorta.
The branches of the arch of aorta can be remembered as ABCS:

A = Arch of Aorta
B = Brachiocephalic artery
C = Left common carotid artery
S = Left subclavian artery

The Brachiocephalic artery divides into the right common carotid …

Anterior abdominal wall consists of following layers outside to in-

Skin:
Superficial fascia:

Superficial fatty layer of Camper
Deep fibrous layer of Scarpa
Muscles of Anterior Abdominal wall:

External oblique: Outer surface of lower 8 ribs → Xiphoid, linea alba, Pubic crest, Pubic tubercle, Anterior ½ pubic crest
Internal oblique: Lumbar fascia, Anterior 2/3 iliac crest, Lateral 2/3 inguinal ligament→  Lower 6 costal cartilages, line alba, pubic crest
Transversus …

All are about 45 cms or 18 inches:

Length of Vas deferens or ductus deferens
Length of thoracic duct
Length of Spinal cord
Femur (for 6 feet person)
Length of transverse colon
Distance from the incisor teeth to the cardiac end of the stomach
Umbilical cord at birth
Length of sartorius muscle

All are about 25 cms or 10 inches:

Length of Esophagus
Length of Ureter
Length of Duodenum
Length of Descending colon

All …

Definition:
The ureters are a pair of muscular tubes which convey the urine from kidneys (renal pelvis) to the urinary bladder.
Size and Extent:

Length: About 25 cm (10 inches)
Diameter: About 3 mm
Extent: Pelviureteric junction to urinary bladder

Location:
Retroperitoneal structure in the posterior abdominal wall (upper part) and lateral pelvic wall (lower part)
Parts, Courses and Relations:
A) Pelvis of Ureter:

Arises from the renal pelvis (leaves …