Question

Why are the rings lining trachea are C - shaped

Answer 1

heya mate

The answer of ur question is


♢ Rings are incompleted dorsally so that oesophagus can easily changed its diameter.


OR




C - shaped cartilaginous rings protect and maintain the airway open . They are incompleted because this allows the trachea to collapse slightly to allow food to down the oesophagus


hope it helps

Answer 2

$\huge\boxed\{hey there here's ur answer}$

$<b>Cartilage is a resilient and smooth elastic tissue, a rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components. It is not as hard and rigid as bone, but it is much stiffer and much less flexible than muscle.The matrix of cartilage is made up of chondrintes etc.$

$<b>Because of its rigidity, cartilage often serves the purpose of holding tubes open in the body. Examples::: include the rings of the trachea, such as the cricoid cartilage and carina.$

$<b>"Cartilage" is composed of specialized cells called "chondrocytes" that produce a large amount of collagenous extracellular matrix, abundant ground substance that is rich in proteoglycan and elastin fibers. Cartilage is classified in three types, elastic cartilage, hyaline cartilage and fibrocartilage, which differ in relative amounts of collagen and proteoglycan.$

$<b>Cartilage does not contain blood vessels (it is avascular) or nerves (it is aneural). Nutrition is supplied to the chondrocytes by diffusion. ....The compression of the articular cartilage or flexion of the elastic cartilage generates fluid flow, which assists diffusion of nutrients to the chondrocytes.!! Compared to other connective tissues, cartilage has a very slow turnover of its extracellular matrix and does not repair...$

$<marquee>hope it helps u❤❤❤$