meninges, ventricles (left and right), cerebellum, pons, midbrain, hypothalamus, pituitary gland, optic chiasm, thalamus, adenoid tissue, lymph node, tubular structure (possibly lymphatic vessel), muscular fibers (various muscle groups), cartilaginous joint (e.g., vertebrae), skeletal system component (possible rib or vertebral body), nerve bundle, trachea (windpipe) branch, bronchial tube, lung alveoli ( clusters of small, rounded structures), diaphragm muscle fibers, abdominal aorta segment, renal artery (kidney blood vessel), pancreatic duct, duodenal loopZ