Ivy Tech APHY 201 Exam 2 Questions with Correct Answers
Question 1:
Definition of a Hormone
Answer:
....A chemical secreted directly to the blood that travels to travels to distant target cells and
exerts its effects at low concentrations
Question 2:
Discrete Endocrine Organs
Answer:
....Hypothalamus, Pituitary, Pineal, Thyroid, Parathyroids, Thymus, Pancreas,
Question 3:
Diffuse Endocrine Cells
Answer:
....Endocrine cells scattered throughout non-endocrine organs that produce
hormones (heart, stomach, small intestine, liver (prohormones), kidneys, skin,adipose tissue)
Question 4:
What is the degree of target cell response to a hormone determined by?
Answer:
....The number and type of
receptors on the target cell, blood concentration of the hormone
Question 5:
Cells with more receptors, or higher affinity receptors will...
Answer:
....respond at a greater rate than cells with fewer or lower affinity receptors
Question 6:
What is the blood concentration of the hormone determined by?
Answer:
....The rate of secretion vs. the rate of removal
,Question 7:
The rate of secretion by an endocrine cell is directly related to...
Answer:
....the magnitude of the stimulus
Question 8:
The rate of removal of secretion by an endocrine cell is determined by... target cells (removes
only a small amount of hormone from the blood)
Answer:
....-breakdown of a hormone by
-removal by liver or kidneys (main route of loss)
Question 9:
Hormone 1/2 life
Answer:
....The period of time required to remove 1/2 the circulating concentration of hormone from
the blood
Question 10:
Do lipid soluble hormones for water soluble hormones have longer 1/2 lives? Why?
Answer:
....Lipid soluble
Question 11:
In order to get a target cell's response to remain consistent for a period of time longer than its
1/2 life,
Answer:
hormones, because they are carried in the blood on carriers
Question 12:
the hormone must be...
Answer:
....secreted for the entire time a target cell response is desired
, Question 13:
Hormone secretion is controlled through three main types of feedback pathways:
Answer:
....1) Humoral feedback
Question 14:
3) Hormonal feedback Humoral Feedback
Answer:
....-Simplest form of endocrine feedback
-Stimulus is a non-hormone molecule in the blood (blood calcium & blood glucose)
Question 15:
Neural Feedback
Answer:
....-Stimuli cause the release of neurohormones from neurosecretory cells
-Used by hypothalamus, posterior pituitary, & adrenal medulla
Question 16:
Neurosecretory cells
Answer:
....Neurons that have their axon terminals ending at a blood capillary, not a chemical synapse
Question 17:
Hormonal Feedback
Answer:
....Release of a hormone from a particular endocrine cell or organ is caused by a tropic hormone
released from a different endocrine cell or organ
Question 18:
Hormonal Feedback controls release of...
Answer:
....all hormones released from the anterior pituitary
Question 19:
Hormones in the anterior pituitary (follicle stimulating hormone)
Answer:
....ACTH (adrenocorticotropic hormone) FSH
Question 1:
Definition of a Hormone
Answer:
....A chemical secreted directly to the blood that travels to travels to distant target cells and
exerts its effects at low concentrations
Question 2:
Discrete Endocrine Organs
Answer:
....Hypothalamus, Pituitary, Pineal, Thyroid, Parathyroids, Thymus, Pancreas,
Question 3:
Diffuse Endocrine Cells
Answer:
....Endocrine cells scattered throughout non-endocrine organs that produce
hormones (heart, stomach, small intestine, liver (prohormones), kidneys, skin,adipose tissue)
Question 4:
What is the degree of target cell response to a hormone determined by?
Answer:
....The number and type of
receptors on the target cell, blood concentration of the hormone
Question 5:
Cells with more receptors, or higher affinity receptors will...
Answer:
....respond at a greater rate than cells with fewer or lower affinity receptors
Question 6:
What is the blood concentration of the hormone determined by?
Answer:
....The rate of secretion vs. the rate of removal
,Question 7:
The rate of secretion by an endocrine cell is directly related to...
Answer:
....the magnitude of the stimulus
Question 8:
The rate of removal of secretion by an endocrine cell is determined by... target cells (removes
only a small amount of hormone from the blood)
Answer:
....-breakdown of a hormone by
-removal by liver or kidneys (main route of loss)
Question 9:
Hormone 1/2 life
Answer:
....The period of time required to remove 1/2 the circulating concentration of hormone from
the blood
Question 10:
Do lipid soluble hormones for water soluble hormones have longer 1/2 lives? Why?
Answer:
....Lipid soluble
Question 11:
In order to get a target cell's response to remain consistent for a period of time longer than its
1/2 life,
Answer:
hormones, because they are carried in the blood on carriers
Question 12:
the hormone must be...
Answer:
....secreted for the entire time a target cell response is desired
, Question 13:
Hormone secretion is controlled through three main types of feedback pathways:
Answer:
....1) Humoral feedback
Question 14:
3) Hormonal feedback Humoral Feedback
Answer:
....-Simplest form of endocrine feedback
-Stimulus is a non-hormone molecule in the blood (blood calcium & blood glucose)
Question 15:
Neural Feedback
Answer:
....-Stimuli cause the release of neurohormones from neurosecretory cells
-Used by hypothalamus, posterior pituitary, & adrenal medulla
Question 16:
Neurosecretory cells
Answer:
....Neurons that have their axon terminals ending at a blood capillary, not a chemical synapse
Question 17:
Hormonal Feedback
Answer:
....Release of a hormone from a particular endocrine cell or organ is caused by a tropic hormone
released from a different endocrine cell or organ
Question 18:
Hormonal Feedback controls release of...
Answer:
....all hormones released from the anterior pituitary
Question 19:
Hormones in the anterior pituitary (follicle stimulating hormone)
Answer:
....ACTH (adrenocorticotropic hormone) FSH
