Introduction to Anatomy & Physiology - Key Concepts
Termini in questo insieme (20)
Anatomy is the study of the body's structure, including the shape and organization of body parts.
Physiology is the study of the body's function, or how body parts work and carry out life processes.
Structure exists to perform a function; to understand why an organ is shaped a certain way, you must understand what it does, and vice versa.
Atomic/molecular, cellular, tissue, organ, organ system, organism.
Anatomical variation refers to differences in body structures among individuals; understanding it helps avoid medical errors and improves learning.
The anatomical position is a standard body posture: upright, face forward, feet shoulder-width apart, palms facing forward; it provides a consistent reference for anatomical terms.
Anterior means toward the front of the body; posterior means toward the back.
Medial means toward the midline of the body; lateral means away from the midline.
Proximal means closer to the point of attachment of a limb; distal means farther from the point of attachment.
Superficial describes structures closer to the body surface; deep describes structures farther from the surface.
Protection/support: integumentary, skeletal, muscular; Communication/integration: nervous, endocrine; Transport/immunity: circulatory, lymphatic; Exchange: respiratory, digestive, urinary; Reproduction: reproductive system.
Homeostasis is the maintenance of a stable internal environment despite external changes.
Negative feedback loops oppose changes to maintain homeostasis; positive feedback loops amplify changes, often to complete a process.
Thermoregulation: when body temperature rises, sweating cools the body; when it falls, shivering warms it.
Labor contractions: oxytocin release increases contractions, which increases oxytocin release until delivery.
Receptor (detects change), control center (processes info), effector (carries out response to restore balance).
It houses the heart and lungs, protected by the rib cage and sternum.
Digestive organs, kidneys, bladder, and internal reproductive organs.
The peritoneal cavity is a serous membrane-bound space surrounding most abdominal organs; the retroperitoneum is behind this membrane housing kidneys and pancreas.
It provides a universal language for accurate communication and reduces medical errors.