Biology

Hyaline Cartilage

Hyaline Cartilage Definition Hyaline cartilage is a type of connective tissue composed of specialized cells in a translucent, pearly blue matrix. Hyaline cartilage thinly covers the articulating ends of bones, connects the ribs to the sternum, and supports the nose, the trachea, and part of the l.....

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Zooplankton

Zooplankton Definition Zooplankton is plankton that consists of tiny animals, such as rotifers, copepods, and krill, and of microorganisms once classified as animals, such as dinoflagellates and other protozoans. It is made up of hundreds of thousands of different species of animals. Some are bab.....

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Costal Cartilage

Costal Cartilage Definition Costal cartilage is the cartilage forming the anterior continuation of a rib, providing the means by which it reaches and articulates with the sternum. Costal (cost- = rib) cartilage also connects the three superior false ribs to the sternum, but these false ribs are a.....

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About Thorax

About Thorax Definition Thorax (or Chest) is the part of the body cavity from the neck or head to the abdomen, containing the heart, lungs, etc.; chest: in mammals, the diaphragm separates it from the abdomen. The thorax includes the thoracic cavity and the thoracic wall. Its walls are formed by .....

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Upper Limb

Upper Limb Definition Upper limb is the area of the skeleton that is able to grasp strike and conduct fine motor skills. It is supported and stabilized by various muscles attached to the ribs and vertebrae. The upper limb and lower limbs were evolved basically for bearing the weight of the body a.....

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About Pelvis

About Pelvis Definition Pelvis is the basin-shaped structure in vertebrate animals that joins the spine and lower or hind limbs. In primates, the pelvis is composed of the two hipbones joined to the sacrum. It contains, protects, and supports the intestines, bladder, and internal reproductive org.....

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Scapula

Scapula Definition Scapula (or shoulder blade) is the anatomical term for the flat, triangle-shaped bone that makes up a human’s shoulder. Other animals have similar bones, often described as scapular. The shoulder blade is also called omo in Latin medical terminology. The word “scapu.....

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Clavicle

Clavicle Definition Clavicle is the only long horizontal bone in the body, it is also called collarbone. The shoulder is the most mobile joint in the human body; however, the extreme range of its potential movements makes the shoulder joint susceptible to dislocation. The name clavicle comes from.....

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Shoulder Girdle

Shoulder Girdle Definition Shoulder Girdle or pectoral girdle is the bony ring, incomplete behind, which serves for the attachment and support of the upper limbs. It is formed by the manubrium sterni, the clavicles, and the scapulae. In humans it consists of the clavicle and scapula; in those spe.....

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Rib Cage

Rib Cage Definition Rib cage is the bony structure in the chest formed by the ribs and sternum (breastbone) that encloses and protects the heart and lungs. In humans, the rib cage, also known as the thoracic cage, is a bony and cartilaginous structure which surrounds the thoracic cavity and suppo.....

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Bronchus

Bronchus Definition Bronchus, also called bronchi is either of the two main branches of the trachea that lead to the lungs, where they divide into smaller branches. There is a right bronchus and a left bronchus and these bronchi branch into smaller secondary and tertiary bronchi which branch into.....

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Proteoglycan

Proteoglycan Definition Proteoglycan is any of a group of polysaccharide-protein conjugates present in connective tissue and cartilage, consisting of a polypeptide backbone to which many glycosaminoglycan chains are covalently linked; they form the ground substance in the extracellular matrix of .....

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