Chapter 1 Flashcards
A. Sagittal Plane B. Frontal Plane C. Transverse Plane
“sensor”. Protein on cell surface; responds to environmental Δ’s → relays input to control center.
Receptor
- usually in brain.
a. determines set point
b. evaluates input
c. determines appropriate response
d. transmits instructions to effector
Control Center
“worker” – usually a muscle, gland or organ. Makes adjustments to restore homeostasis.
Effector
What are the 2 Main Feedback Systems in the body
Negative Feedback System
and the Positive Feedback System
What does the Negative Feedback System do
•reduce the original stimulus. Most feedback systems.
What does the Positive Feedback System do
increase the original stimulus. Ex. Blood clotting and uterine contractions during labor and delivery.
What are the 3 Serous Membranes and what organs are they associated with?
- Pleural Membrane (Pleura): lungs
- Pericardial Membrane (Pericardium): heart
- Peritoneal Membrane (Peritoneum): many organs of the abdominal pelvic cavity
What is the Function, Location and Structure of the Serous Membranes
- Function: produce serous fluid to ↓friction as organs move.
- Location: only in ventral cavity.
- Structure: double-layered with fluid between the layers.
What are the 2 Serous Membrane Layers called and what do they line
- Visceral layer: lines the organ; inner layer
- Parietal layer: lines the cavity; outer layer
What are the 4 Body Cavities called
- Dorsal Body Cavity
- Ventral Body Cavity
- Thoracic Cavity
- Abdominopelvic Cavity
Locate the Thoracic Cavity
2 is the Thoracic Cavity
Locate the Dorsal Body Cavity
3 in the Dorsal Body Cavity
Locate the Abdomino-Pelvic Cavity
1 Is the Abdomino-Pelvic Cavity
Locate the Ventral Body Cavity
4 is the Ventral Body Cavity
