Chapter 1 Test Flashcards
Anatomy
Study of body structure and relationships
Physiology
Study of body function and life-sustaining activities
Gross Anatomy
Study of large, visible structures
Regional Anatomy
Focuses on specific body regions
System Anatomy
Studies single organ systems
Surface Anatomy
Relates internal structures to skin.
Cytology
Study of cells
Histology
Study of tissues
Developmental Anatomy
Tracks life development.
Embryology
Pre-birth development.
Structural Organization Levels
Chemical, cellular, tissue, organ, organ system, organism
Necessary Life Functions
Boundary maintenance, movement, responsiveness, digestion, metabolism, excretion, reproduction, growth.
Homeostasis
Maintains stable internal conditions.
Dynamic equilibrium.
Involves receptors, control centers, effectors
Receptor
detect sensations
Control Center
provides centralized monitoring, control and command about concrete situations.
Effector
any organ or tissue that receives information from the integrating center and acts to bring about the changes needed to maintain homeostasis
Negative Feedback
Most common mechanism.
Response reverses initial stimulus.
E.g., temperature regulation, blood glucose.
Positive Feedback
Enhances initial stimulus.
Less common.
E.g., labor contractions, blood clotting.
Homeostatic Imbalance
Disrupts homeostasis.
Increases disease risk.
Occurs with aging or overwhelmed mechanisms.
Anatomical Position or Ventral
Body erect with arms at sides,palms forward
Posterior or Dorsal
Back
Superior or Cranial
toward the head of the body
Inferior or caudal
away from the head; lower
Lateral
sides