Receptors that monitor stretch in the articular capsules that enclose synovial joints; they are proprioceptors, mechanoreceptors, and nociceptors; contains at least four receptor types (1) Lamellar Corpuscles, (2) Bulbous Corpuscles, (3) Free Nerve Endings, and (4) Receptors resembling Tendon Organs; together they provide information on joint position and motion.
Puffins are built for swimming underwater rather than for flying, and at the Alaska SeaLife Center in Seward, a mutli-level seabird display allows visitors to watch puffins and other sea birds dive to the bottom of the enclosure for food. When they dive, puffins flap their wings through the water, appearing to fly.
âThey always head off to sea in the middle of the night.â Puffins spend most of their lives on the open Atlantic, resting on the water and diving as deep as 100 feet for fish. (Their range remained unknown until Kress and colleagues attached a geolocator to a bird hatched on Maineâs Seal Island in 2009.