NEET BIOLOGY

Detailed explanation-1: -Muscle is known to arise from both ectodermal (ectomesenchyme) and endodermal (endomesoderm) sources in the Spiralia (see literature in Boyer et al., 1998; Gilbert and Raunio, 1997; Henry and Martindale, 1998).

Detailed explanation-2: -Various organs in our body are derived from three different germ layers-outer ectoderm, middle mesoderm and inner endoderm. The muscle tissue is derived from the mesoderm.

Detailed explanation-3: -The end of the muscle closest to the torso is referred to as origin of muscles. The attachment of a muscle to a more sturdy bone is referred to as the insertion of muscles. Tendon connects the muscle to the bone at these sites.

Detailed explanation-4: -Cells of mesodermal origin are the most abundant in the human body, representing a great variety of cell types, including the musculoskeletal system (bone, cartilage and muscle), cardiovascular system (heart, blood and blood vessels), as well as the connective tissues found throughout our bodies.

Detailed explanation-5: -Solution : Ciliary muscles and iridial muscles of eye.