homeostasis system Flashcards
Which of the following receptors are responsible for detecting blood pressure?
Osmoreceptors
Dendrites
Nociceptors
Thermoreceptors
Baroreceptors
Baroreceptors
Which of the following processes is regulated by negative feedback?
Uterine contraction during labour
Generation of an action potential
Blood glucose concentration
Secretion of oxytocin
Blood clotting cascade
Blood glucose concentration
Which of the following terms best describes the production of heat?
Thermocouple
Thermogenesis
Thermophile
Thermostat
Thermoregulation
Thermogenesis
Which of the following statements is TRUE?
Osmoreceptors dected changes in blood pressure
Fluid homeostasis is regulated by positive feedback
Negative feedback loops are called ‘negative’ as they cause harm to the body
A positive feedback loop reverses a change in a controlled condition
Homeostasis is regulated by the endocrine system and nervous system
Homeostasis is regulated by the endocrine system and nervous system
- Complete the following sentence: The endocrine system maintains homeostasis by releasing…
nerve impulses.
hormones.
action potentials.
prostaglandins.
electrolytes.
hormones.
Complete the following sentence: The part of the brain that maintains homeostasis by linking together the activities of the endocrine and nervous systems is called the…
cerebellum
hypothalamus
frontal lobe
corpus callosum
thalamus
hypothalamus
Which of the following mechanisms does the body use to restore homeostasis during periods of raised body temperature?
Piloerection
Hypoventilation
Shivering
Perspiration
Vasoconstriction of the blood vessels in the skin
Perspiration
Which of the following mechanisms does the body use to restore homeostasis during periods of raised body temperature?
Piloerection
Hypoventilation
Shivering
Perspiration
Vasoconstriction of the blood vessels in the skin
Perspiration
Complete the following sentence: Calcium homeostasis is controlled by…
parathyroid hormone.
erythropoietin.
aldosterone.
insulin.
glucagon.
parathyroid hormone.
Complete the following sentence: In a negative feedback system, the response of the effector to a stimulus…
inhibits the original stimulus.
increases the response.
prevents any changes to the original stimulus.
activates the effector.
activates the control centre.
inhibits the original stimulus.
- Which of the following statements about homeostasis is TRUE?
Nervous stimuli from receptor to a control centre is referred to as output
Baroreceptors detect changes in electrolyte concentration
The adrenal medulla responds only to neural stimuli and not adrenocorticotrophic hormone (ACTH)
The regulation of blood glucose is an example of positive feedback
A change in blood Ca2+ levels that trigger a change in the secretion of parathyroid hormone is an example of a hormonal stimulus
The adrenal medulla responds only to neural stimuli and not adrenocorticotrophic hormone (ACTH)
Osmoreceptors detect changes in which of the following homeostatic parameters?
Temperature
Fluid
Glucose
pH
Blood pressure
Fluid
Glucose homeostasis is regulated by which of the following hormones?
Prolactin
Insulin
Aldosterone
Oxytocin
Calcitonin
Insulin
Which of the following statements is TRUE?
The first component in a homeostatic pathway is the control centre.
Negative feedback mechanisms are more effective over the age of 60.
Negative feedback is regulated by the nervous system and positive feedback is regulated by the endocrine system.
Baroreceptors detect changes in body temperature and regulate homeostasis by positive feedback.
Body temperature, blood glucose and fluid balance are regulated by negative feedback.
Body temperature, blood glucose and fluid balance are regulated by negative feedback.
Which of the following mechanisms helps restore homeostasis during periods of high body temperature?
Sweating
High intensity exercise
Shivering
Vasoconstriction
Hydrolysis
Sweating
