Patrick Macnee, who played John Steed in The Avengers, has died at the age of 93 at his home in California, according to a statement by his son. Avengers star Patrick Macnee has died of natural causes at his home in California at the age of 93. According to a statement by the actor's son, Rupert, he passed away with his family at his bedside at his home in Rancho Mirage earlier today.
Cross-section of a long bone showing both spongy and compact osseous tissue. Bone tissue, or osseous tissue, is the major structural and supportive connective tissue of the body. Bone tissue forms the rigid part of the bones that make up the skeleton.Bone tissue is different from bones themselves â bones are organs made up of bone tissue as well as marrow, blood vessels, epithelium and nerves, while bone tissue refers specifically to the mineral matrix that form the rigid sections of the organ.here are two types of bone tissue: cortical bone and cancellous bone. Cortical bone is synonymous with compact bone, and cancellous bone is synonymous with trabecular and spongy bone. Cortical bone forms the extremely hard exterior while cancellous bone fills the hollow interior.
Noun. 1. ostracoderm-extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic. agnathan, jawless fish, jawless vertebrate-eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms.stracoderm. n. 1. (Palaeontology) any extinct Palaeozoic fishlike jawless vertebrate of the group Ostracodermi, characterized by a heavily armoured body. [C19: via New Latin from Greek ostrakon shell + -derm].