Basics Flashcards
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ecto-
outside
edem-
swelling
Inter-
between
pan
all
peri
around
sarco-
flesh
-cytosis
high cell number
ectasis
dilation, expansion
-fiber
thread
-gen
producing
-mer/ -mere
unit
-oid
resembling
-osis
abnormal condition
-penia
deficiency
-poiesis
to make
-ptosis
prolapse, falling
What maintains homeostasis?
multiple response loops provide input and result in a stabilizing output
When talking about homeostatic control systems, what is local control?
isolated change in a few cells or a tissue, response emerges and acts locally
When talking about homeostatic control systems, what is reflex control
long distance signaling, typically involving endocrine or neural responses
What are the 3 major components of the homeostatic control system?
input, integrating, output
What are the elements of a full response loop?
stimulus, sensor, input signal, integrating center, output signal, target, response
What are the 2 kinds of loops of control systems?
1- open loop control system
2- closed loop control system
Feedback is the process in which some part of the
output of the system is returned to its input in order to regulate its furhter output
Negative Feedback
occurs when the output of a system acts to oppose changes to the input of the system
Negative feedback loops ____ the original input
shut off
Positive feedback
occurs when the output of a sytem acts to increase change to the input of the system
How to positive feedback loops end?
they require outside factors to shut down the system
Are positive feedback loops homeostatic?
no; the response amplifies stimulus which sends organism further from setpoint
Ventral
Anterior
Dorsal
Posterior
Caudal
Posterior or back of the head
Rostral
(anterior) front of the head
