When an unborn baby's lungs form during pregnancy, they grow in parts called lobes. Each lobe connects to the airway so air can move in and out of it when the baby starts breathing after birth. A fetal lung mass can cause problems before the baby is born if it gets big enough to put pressure on: other parts of the lung.

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The costal surface is covered by the costal pleura and is along the sternum and ribs. It also joins the medial surface at the anterior and posterior borders and diaphragmatic surfaces at the inferior border. The medial surface is divided anteriorly and posteriorly.

The aorta is the largest artery in the body, initially being an inch wide in diameter. It receives the cardiac output from the left ventricle and supplies the body with oxygenated blood via the systemic circulation.

What are testes?

The testes — also called testicles — are two oval-shaped organs in the male reproductive system. They’re contained in a sac of skin called the scrotum. The scrotum hangs outside the body in the front of the pelvic region near the upper thighs.

Formation of the Spinal Nerves

The spinal nerves are mixed nerves that originate from the spinal cord, forming the peripheral nervous system.

Each spinal nerve begins as an anterior (motor) and a posterior (sensory) nerve root. These roots arise from the spinal cord, and unite at the intervertebral foramina, forming a single spinal nerve.

The spinal nerve then leaves the vertebral canal via the intervertebral foramina, and then divides into two:

The cecum is the most proximal part of the large intestine and is located between the ileum (distal small bowel) and the ascending colon.

Having served as a site for cellulose digestion in our ancestors, the cecum now simply acts as a reservoir for chyme which it receives from the ileum.

In this article, we shall look at the anatomy of the cecum – its anatomical structure, neurovascular supply, and lymphatic drainage.

The colon (large intestine) is the distal part of the gastrointestinal tract, extending from the cecum to the anal canal. It receives digested food from the small intestine, from which it absorbs water and electrolytes to form faeces.

Anatomical Structure

The testes have an ellipsoid shape. They consist of a series of lobules, each containing seminiferous tubules supported by interstitial tissue. The seminiferous tubules are lined by Sertoli cells that aid the maturation process of the spermatozoa. In the interstitial tissue lie the Leydig cells that are responsible for testosterone production.