Unit 1 - Intro Flashcards
Anterior
Toward the front
Ex: The heart is anterior to the spine
Posterior
Toward the back
Spine is posterior to the heart
Superior
Toward the head - Along the vertical axis
The eyes are superior to the nose
Inferior
Away from the head
The nose is inferior to the eyes
Medial
Toward the midline - along the horizontal axis
Nose is medial to the ear
Lateral
Away from the midline on the horizontal axis (towards the sides)
The ear is lateral to the nose
Proximal
Toward the origin or attachment
The elbow is proximal to the wrist
Distal
Away from the origin/attachment
The wrist is distal to the elbow
Superficial
Toward the surface
The skin is superficial to the muscle
Deep
Away from the surface
Muscles are deep to the skin
Dorsum
The back of any body part Protruding anteriorly from the body (back of hand)
Protruding body parts: Hands, tongue, feet, penis
Palmar
Anterior surface of the hand
Handprints and fingerprints on the palmar surface
Plantar
Sole of the foot (inferior surface)
Bilateral
Both right and left sides of the body
Pair - Kidneys, eyes, ears etc.
Unilateral
Only one side
Spleen, gallbladder, appendix…
Ipsilateral
Found on the same side of the body
Right lung and kidney
Left hand and left foot
Contralateral
Found on opposite sides
Ex: Left hand and right foot
What percentage of the body is water?
70%
Intracellular
Fluid within a cell bounded by cell membrane
Extracellular
Fluid outside the cell membrane
Two sub-compartments of extracellular fluid
Interstitial fluid - between cells (outside the membrane and blood vessel wall)
Blood plasma - Within blood vessels (within the bloodstream contained within the walls of the blood vessels)
Cut on the frontal plan (coronal)
Split by anterior and posterior (front and back of body)
Ex: x-rays of the chest
Cut on the Sagittal plane
Median
Two halves (left and right)
Median means two equal halves
Ex: Radiograph
Cut on the Horizontal or transverse plane
Divided from top to bottom or cross section (superior and inferior sections)
Ex: CAT Scan of the head
Words used interchangeably with Anterior and Posterior
Ventral and Dorsal
Posterior Cavity
Also called Dorsal Cavity - Back of body
Contains two divisions (cranial and vertebral)
Cranial Cavity
Part of larger Dorsal or Posterior cavity
Brain/Skull
Vertebral cavity
Part of larger Dorsal/Posterior cavity
Spinal Chord/Vertebral bones
Ventral Body Cavity
Towards the front of the body
Contains Thoracic and abdominopelvic cavities
Thoracic Cavity
Chest (superior to diaphragm)
- Left pleural
- Mediastinal
- Right pleural
Left Pleural Cavity
In thoracic cavity
Left Lung
Mediastinal Cavity
Within the thoracic cavity
Contains esophagus, trachea and large vessels
Also contains Pericardial Cavity (heart)
Pericardial Cavity
Within the Mediastinal cavity that is within the thoracic cavity that is within the Ventral Cavity
Contains the Heart
Right pleural cavity
Contains right lung
Abdominopelvic Cavity
Upper body (inferior to the diaphragm)
Contains abdominal and pelvic cavity
Abdominal Cavity
Contains organs in the belly (stomach, spleen, pancreas and intestines)
Can be divided into four quadrants (drawn opposite on diagram for easier reference to body)
Right upper quadrant of abdominal cavity
Contains liver, pancreas and gallbladder
Left upper quadrant of abdominal cavity
Contains stomach, spleen and part of pancreas
Contained in both upper quadrants of abdominal cavity
Pancreas
Right lower quadrant of abdominal cavity
Contains cecum, appendix, part of intestine and ascending colon
The left lower quadrant of the abdominal cavity
Contains the descending & sigmoid colon and distal large intestine
Contained in all four quadrants of abdominal cavity
Small and large intestines
Large intestines surround the small intestines like a picture frame
Pelvic cavity inside abdominal cavity
Reproductive, urinary (not kidneys though) and terminal digestive tract below abdominal cavity
Also, sigmund colon, rectum, anus, bladder snd uretha
Homeostasis
Normal function
Equilibrium or balance
Involves organs and nervous system and endocrine system
Negative feedback in physiology
Control mechanism
Decreases or shuts off stimulus (to get back to homeostasis)
Ex: Temperature regulation
Sensory Receptor
Monitors internal environment and responds to changes
Detects stimulus : change in external environment causing internal changes
Control Center
Analyzes the information received snd determines a response
Get to a normal set point
Effector
Provides means for regulatory center’s response
Pathway relays messages from the regulatory center to the effector
Positive feedback
Accelerate a stimulus
Keeps moving away from normal
What is the mechanism of homeostasis?
Negative feedback (moves things back to normal)
What does the control center contain?
Contains the set point for the variable
What does the receptor do?
Detects the variable
What does the effector do?
Responds to bring the variable back to homeostatic levels