Sternal rib
The lower five ribs do not directly connect to the sternum and are known as false ribs.
The upper three false ribs connect to the costal cartilages of the ribs just above them. The last two false ribs, however, usually have no ventral attachment (no anchor at all in front) and are called floating, fluctuating or vertebral ribs.
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- Sternum
the manubrium (the upper segment of the sternum, a flattened, roughly triangular bone), the corpus (body) of the sternum, and the xiphoid process (the little tail of the sternum than points down). These sections of the sternum arise as separate bones, and they may fuse partially or completely with one another. Also known as breastbone.
- Sternutation
Sneezing; the sound of sneezing. When we sneeze, air is expelled with force from the nose (and from the mouth, if it is open) due to a spasmodic contraction of the chest muscles and diaphragm. A sneeze is often triggered by irritation of the mucous membrane of the nose or less often by a bright […]
- Steroid
One of a large group of chemical substances classified by a specific carbon structure. Steroids include drugs used to relieve swelling and inflammation, such as prednisone and cortisone; vitamin D; and some sex hormones, such as testosterone and estradiol.
- Steroid abuse
Use of substances containing steroids to increase muscle mass. Steroids can have many side effects when misused, including psychiatric problems, liver tumors, reduction in the size of male genitals, sterility, and heart damage.
- Stethoscope
An instrument that is used to transmit low-volume sounds such as a heartbeat (or intestinal, venous, or fetal sounds) to the ear of the listener. A stethoscope may consist of two ear pieces connected by means of flexible tubing to a diaphragm that is placed against the skin of the patient. The stethoscope has become […]