Ch 1 pt 2 Flashcards
Posterior aspect (encased in bone)
The surface of the human body viewed from the back
Ventral cavity (not encase)
Human body cavity located at the front of the body
Cranial cavity (PA)
Formed by bones in the cranium (brain)
Vertebral canal
Formed by the bones of the vertebral column (spinal cord)
Thoracic cavity
Space in your chest that contains organs, blood vessels, nerves and other important body structures.
Abdominopelvic cavity
A body cavity that consists of the abdominal cavity and the pelvic cavity.
Serous membranes
1 cell layer thick membrane that’s wrapped in on itself forming 2 layers.
Parietal layer
Lines internal surface of body wall
Visceral layer
Covers external surface of organs
Serous cavity
Space between membranes
Serous fluid ->
Reduces friction
Mediastinum
Median space in the thoracic cavity
What does the mediastinum contain?
heart, thymus, major blood vessels
Pericardium
Two-layered serous membrane
Visceral pericardium
Forms the heart’s external surface
Parietal pericardium
Outer layer, which forms the sac around the heart
Pericardial cavity
Space between parietal and visceral layers containing serous fluid
Pleura
Two-layered serous membrane associated with lungs
Visceral pleura
Inner layer covers external surface of lungs
Parietal pleura
Outer layer lines internal surface of thoracic wall
Pleural cavity
Space between parietal and visceral layers containing serous fluid
Pelvic cavity
Inferior area (below); between hip bones, contains large intestine, bladder, internal reproductive organs
Abdominal cavity
Superior area (above); digestive system organs and kidneys
Peritoneum
Two-layered serous membrane lining the abdominopelvic
Peritoneal cavity
Potential space between parietal and visceral layers containing serous fluid
Visceral peritoneum
Inner layer, which covers the external surface of most abdominal and pelvic organs
Parietal peritoneum
Outer layer, which lines the internal walls of the abdominopelvic cavity
When looking at the body it is?
Inverted
Homeostasis
Constant internal environment
Receptor
Detects changes in a variable
What does epi stand for?
Above
What does hypo stand for?
Below
What does chondr stand for?
Cartilage
Lateral
How far you are from the midline
Simulus
Serves change
Nervous system
Fast, short lasting
Endocrine system
Slow, long lasting
Control center
Interprets input from receptor and initiates changes through effector
Effector
brings about changes
Negative feedback
Controls most process in the body and fluctuates within a normal range
Example of negative feedback
Temperature regulation
Positive feedback
moving section until climactic event occurs
Example of positive feedback
Breastfeeding, blood clotting, labor
What happens if systems fail?
Homeostatic imbalance or disease result
Avg. body temperature
98.6F
Avg. blood glucose
80-110 mg/dL
Avg. blood pressure
90-120/ 60-80 mm Hg
Example of homeostatic imbalance
Diabetes
Medial
How close you are to the midline
