Upgraded B002 Ntbi0303 Visualizing How Tube Feet — a labelled NEET Biology diagram with a definitions lexicon.
Visualizing how tube feet extend using water pressure for movement. Labelled parts: Bilateral Symmetry, Radial Symmetry, Cross-section, Gas Exchange, Actin. A body plan where the organism can be divided into two identical halves along only one longitudinal plane. FYI: This symmetry is associated with cephalization, the concentration of sense organs at the anterior end. Body plan where parts are arranged around a central axis, like a pie. A diagrammatic view of an organ or tissue obtained by cutting it at a right angle to its longitudinal axis. FYI: Transverse sections (T.S.) are standard in plant anatomy to study the arrangement of vascular bundles. The process by which respiratory gases (O a ‚‚ and CO a ‚‚) move between the external environment and the blood. In humans, this occurs primarily across the alveolar membranes. FYI: Gas exchange relies on the partial pressure gradient; gases move from an area of higher partial pressure to an area of lower partial pressure. A protein that forms the thin filaments of muscle fibers.