(Seeley's Anatomy & Physiology) Chapter 1
Questions and Answers| Latest Update
Morphogenesis change in shape of tissues, organs and the ENTIRE ORGANISM.
Homeostasis process by which organisms maintain a relatively stable internal
environment
set point the ideal fixed setting of a particular physiological system, such as internal body
temperature.
normal range slight increase or decrease of physiological values around a set point
negative-feedback Deviation from the set point is made Smaller or Resisted. maintains
homeostasis. (eg. shivering, goosebumps)
positive-feedback Deviation from the set point is INCREASED or made GREATER. Not
homeostatic. (eg. child-labor, hemorrhagic bleeding, heart failure)
3 Components of Negative Feedback Mechanism 1. receptor
2. control center
3. effector
, Directional terms
medial toward the midline
lateral toward the midline
superficial close to the surface of the body
deep toward the interior
central region head, neck, trunk
Trunk region thorax, abdomen
sagittal plane runs vertically through the body dividing it into left and right portions
coronal plane runs vertically from right to left and divides the body into anterior and
posterior parts
transverse plane horizontal division of the body into upper and lower portions
5 Major body cavities cranial, spinal, thoracic, abdominal, pelvic
Questions and Answers| Latest Update
Morphogenesis change in shape of tissues, organs and the ENTIRE ORGANISM.
Homeostasis process by which organisms maintain a relatively stable internal
environment
set point the ideal fixed setting of a particular physiological system, such as internal body
temperature.
normal range slight increase or decrease of physiological values around a set point
negative-feedback Deviation from the set point is made Smaller or Resisted. maintains
homeostasis. (eg. shivering, goosebumps)
positive-feedback Deviation from the set point is INCREASED or made GREATER. Not
homeostatic. (eg. child-labor, hemorrhagic bleeding, heart failure)
3 Components of Negative Feedback Mechanism 1. receptor
2. control center
3. effector
, Directional terms
medial toward the midline
lateral toward the midline
superficial close to the surface of the body
deep toward the interior
central region head, neck, trunk
Trunk region thorax, abdomen
sagittal plane runs vertically through the body dividing it into left and right portions
coronal plane runs vertically from right to left and divides the body into anterior and
posterior parts
transverse plane horizontal division of the body into upper and lower portions
5 Major body cavities cranial, spinal, thoracic, abdominal, pelvic
