THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -The blood supply of the external nose is provided primarily by the facial artery, particularly along the lateral aspect and in the lower one-third, with the anterior lateral nasal artery supplying the majority of blood flow to the nasal tip.

Detailed explanation-2: -Function. The angular artery supplies the lacrimal sac, most of the outer side of the nose, part of the lower eyelid, and the orbicularis oculi muscle.

Detailed explanation-3: -The angular artery supplies the lacrimal sac, the medial part of the lower lid, and the skin of the cheek. Some branches pass beneath the medial canthal ligament to anastomose with the infraorbital artery, and some anastomose with the dorsonasal artery.

Detailed explanation-4: -(B) Type II: The angular artery originated from the ophthalmic artery. The artery was superficially embedded in the fibres of the levator labii superioris alaeque nasi and the vein was located at a deeper level with the angular artery at the medial canthus.