Exam 1 Flashcards
Anatomy
Study of the structure of body parts and their relationship to one another
Physiology
Study of the function of body parts; how they work to carry out life-sustaining activities
Gross/Macroscopic anatomy
the study of large, visible structures
Regional anatomy
looks at all structures in a particular area
of the body
System anatomy
looks at just one system
Surface anatomy
looks at internal structures as they relate
to overlying skin (visible muscle masses or veins seen on surface)
Microscopic Anatomy
deals with structures too small to be seen by
naked eye
Cytology
cells
Histology
tissues
Developmental Anatomy
studies anatomical and physiological
development throughout life
Embryology
study of developments before birth
Interrelationship between anatomy and physiology
- Function always reflects structure
- What a structure can do depends on its specific form
- Known as the principle of complementarity of structure and function
Chemical level
Atoms, molecules
Cellular level
cells, organelles
Tissue level
Types of tissues (epithelial, connective, muscle, nervous).
Organ level
Organs and their functions
Organ system level
Systems (e.g., cardiovascular, digestive).
Organismal level
whole organism
Nutrients
chemicals for energy and cell building
Carbohydrates
major source of energy
Proteins
needed for cell building and cell chemistry
Fats
long-term energy storage
Minerals and vitamins
involved in chemical reactions as well as for structural
purposes
Oxygen
Essential for release of energy from foods
Water
Most abundant chemical in body; provides the watery environment needed for chemical reactions
Body Tempurature
If body temp falls below or goes above 37°C, rates of chemical reactions are affected
Atmospheric pressure
Specific pressure of air is needed for adequate breathing and gas exchange in lungs
Homeostasis
the maintenance of relatively stable internal
conditions despite continuous changes in environment
* A dynamic state of equilibrium, always readjusting as needed
* Maintained by contributions of all organ systems
Receptor
senses the enviroment
ex. pain, temperature
Control center
- recieves input
- decides what needs to happen
ex. brain and spinal chord
Effector (exit)
- output from the control center
Negative feedback (most common)
in opposition
ex. going from hot to cold
Positive feedback
more of the same
ex. after you get a cut, more platelets are formed
Superior
high, close to the head
Inferior
low, close to the feet
Anterior
front of body
Posterior
back of body
Medial
midline
lateral
further from the middle
proximal
nearer to the trunk of the body or point of attachment
distal
away from the trunk of the body or point of attachment
Ventral body cavity
contains the organs and is located in the front of the body
Dorsal body cavity
has the cranium and vertebrate
Cranial cavity
skull and brain
Spinal cavity
an anatomical space formed by the vertebral column that stores an integral portion of the central nervous system
Thoracic cavity
that contains your heart, lungs and other organs and tissues
Abdominopelvic
abdomen: containing the liver, gallbladder, stomach, spleen, pancreas, small and large intestines, kidneys, ureters
pelvic: bladder, rectum, sigmoid colon, and reproductive organs
Energy
the capacity to do work
Matter
anything that had mass and occupies space
kinetic energy
energy in action
potential energy
stored (inactive) energy
States of matter
solid, liquid, gas and plasma
Chemical energy
Stored in bonds of chemical substances
Electrical energy
Results from movement of charged particles
Mechanical energy
Directly involved in moving matter
Radiant or electromagnetic energy
Travels in waves (example: heat, visible light, ultraviolet light, and X rays)
Elements
substances that cannot be broken down into simpler substances by ordinary chemical methods
Atoms
Unique building blocks for each element
* Smallest particles of an element with properties of that element
* Give each element its physical and chemical properties
Protons
positive
Neutrons
neutral
Electrons
negative
Ionic bond
electron transfer
Covent bond
electron sharing
Hydrogen bonds
weak interactions
Solution
solute particles are very tiny and do not settle out
Colloid
solute particles are larger and scatter light, do not settle out
Suspensions
solute particles are very large and settle out, and may scatter light
Decomposition (catabolic)
breaking down
ex. AB –> A + B
Synthesis (anabolic)
bringing together
ex. A + B –> AB
Exchange
also called displacement reactions, involve both synthesis and decomposition
* Bonds are both made and broken
Activation Energy
Energy needed to start a reaction
Monosaccharides
one sugar
Disaccharides
two sugars
Polysaccharides
many sugars (formed by dehydration synthesis)
Triglycerides
fats when solid, oil when liquid
Phospholipids
modified triglycerides
“head” and “tail”
Steroids
4 interlocking ring structures
* cholesterol
Eicosanoids
- derived from a fatty acid found in cell membranes
- most important eicosanoids are prostaglandins
Amino acids
linked together by peptide bonds