HLSC 2410 QUIZ 1 AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED
homeostasis definition
Maintaining a stable internal environment
vital signs definition
tells if your body is maintaining homeostasis
4 vital signs
temperature
pulse rate
respiratory rate
blood pressure
percentage body water & equation
60% body water
60% (0.6) * total body weight = total water weight
make up of body water
2/3 intracellular fluid
1/3 extracellular fluid
make up of extracellular fluid
2/3 interstitial fluid (IF)
1/3 plasma
,the ______ separates plasma from intracellular fluid of RBCs and the ______
separates plasma from the IF
cell membrane ; capillary membrane
electrolyte composition: ECF vs. ICF
Na+ is higher outside the cell
Cl- is higher outside the cell
K+ is higher inside the cell
Ca2+ is higher outside the cell
concentration gradient & electrical gradient
Na+ -- both go inside the cell
Cl- -- CG goes inside the cell, EG goes outside the cell
K+ -- CG goes outside the cell, EG goes inside the cell
Ca2+ -- both go inside the cell
the electrolyte concentration ions move ________ concentration gradient
against
the 4 mechanisms of cellular communication
nervous system
endocrine system
paracrine
autocrine
nervous system definition
signals sent to the organs via changes in nerves
endocrine system definition
, signals sent to the organs via delivery of hormones to blood
autocrine
self
paracrine
next to
negative feedback system
most common feedback system & resists change
positive feedback system
very rare and amplifies change
regulated variable
variable that body works to keep within a normal range
set point
range of normal values for the regulated variable
sensor/receptor
component that detects changes in the regulated variable
afferent
incomining --> signals sent from the body to the CNS
SENSORY
efferent
outgoing --> signals sent from the CNS to the body
MOTOR
what has to happen first? afferent or efferent
afferent must happen in order for the efferent response to occur
SOLUTIONS VERIFIED
homeostasis definition
Maintaining a stable internal environment
vital signs definition
tells if your body is maintaining homeostasis
4 vital signs
temperature
pulse rate
respiratory rate
blood pressure
percentage body water & equation
60% body water
60% (0.6) * total body weight = total water weight
make up of body water
2/3 intracellular fluid
1/3 extracellular fluid
make up of extracellular fluid
2/3 interstitial fluid (IF)
1/3 plasma
,the ______ separates plasma from intracellular fluid of RBCs and the ______
separates plasma from the IF
cell membrane ; capillary membrane
electrolyte composition: ECF vs. ICF
Na+ is higher outside the cell
Cl- is higher outside the cell
K+ is higher inside the cell
Ca2+ is higher outside the cell
concentration gradient & electrical gradient
Na+ -- both go inside the cell
Cl- -- CG goes inside the cell, EG goes outside the cell
K+ -- CG goes outside the cell, EG goes inside the cell
Ca2+ -- both go inside the cell
the electrolyte concentration ions move ________ concentration gradient
against
the 4 mechanisms of cellular communication
nervous system
endocrine system
paracrine
autocrine
nervous system definition
signals sent to the organs via changes in nerves
endocrine system definition
, signals sent to the organs via delivery of hormones to blood
autocrine
self
paracrine
next to
negative feedback system
most common feedback system & resists change
positive feedback system
very rare and amplifies change
regulated variable
variable that body works to keep within a normal range
set point
range of normal values for the regulated variable
sensor/receptor
component that detects changes in the regulated variable
afferent
incomining --> signals sent from the body to the CNS
SENSORY
efferent
outgoing --> signals sent from the CNS to the body
MOTOR
what has to happen first? afferent or efferent
afferent must happen in order for the efferent response to occur
