SURGICAL ANATOMY OF THE ANAL CANAL: WITH SPECIAL REFERENCE TO ANORECTAL FISTULTHE DESCRIPTIONS of anal anatomy in current textbooks on surgery and proctology are remarkably diverse. Not only are there departures
The heart is often thought of as a single organ with a unique function. While this is true, it is a very complex organ that carries out a set of functions. Many people are aware that the heart is about the size of a fist. Well, it contains several parts that each have their specifi...
It is the size of a clenched fist located in the middle mediastinum within the pericardial sac. This muscular pump receives direct blood via the coronary circulation and consists of four chambers: two atria and two ventricles. The right side of the heart handles deoxygenated blood while the ...
The heart is around the size of a fist and weighs between 250-350 grams (less than a pound). Enclosed within themediastinum, the medial cavity of the thorax, the heart extends obliquely from the second rib to the fifth intercostal space. It rests on the superior surface of the diaphragm,...
Figure 6. Serous Membrane.Serous membrane lines the pericardial cavity and reflects back to cover the heart—much the same way that an underinflated balloon would form two layers surrounding a fist. There are three serous cavities and their associated membranes. Thepleurais the serous membrane that...
prostate, including its apex, base, median sulcus and lateral lobes, can be palpated through the rectal wall. The normal consistency of the prostate is similar to the thenar eminence when the hand is in a tight fist. The thumb knuckle is representative of what a hard nodule may feel like...
muscular cone-shaped organ the size of a fist, located behind the sternum (breast bone) and between the lungs. The pumping action of the heart circulates blood throughout the body. The heart consists of two upper chambers, the right atrium and the left atrium (pl. atria), and two lower...
The human heart is about the size of a fist.(Image credit: Getty Images) The heart contains electrical "pacemaker" cells, which cause it to contract — producing a heartbeat. "Each cell has the ability to be the 'band leader' and [to] have everyone follow," Phillips said. In people ...
Beating at the third week of intrauterine life, this relentless hollow muscular machine only the size of a human fist can circulate >1500 gallons of blood per day around the body (45 times as much as a bathtub). There has been no visible change in heart's morphological anatomy for an exc...
Data availability and temporal resolution make it challenging to unravel the anatomy (duration and temporal phasing) of the Last Glacial abrupt climate changes. Here, we address these limitations by investigating the anatomy of abrupt changes using sub-d