PSL300 - Midterm 1 Questions With Complete Solutions
Are catecholamines water soluble? Correct Answers Yes
Define antagonists. Correct Answers Competing ligands that
bind and block receptor activity
Define down regulation Correct Answers Cells bring receptors
into the cell in order to decrease cell responsiveness to high
ligand concentrations
Define first messenger. Correct Answers A molecule that brings
information to the target cell
Define signal transduction Correct Answers Process by which
an extracellular signal molecule activates a membrane receptor
that in turn alters intracellular molecules to create a response.
From what cell do endocrine and exocrine cells differentiate
from? Correct Answers Epitheleal cells
How are catecholamines released? Correct Answers Via
exocytosis
How do you make Calcitriol Correct Answers From Vitamin D
-> OH in liver then OH in kidney via Parathyroid Hormone
How is calcitriol production regulated? Correct Answers Effect
of PTH on the kidney
, How many categories are there for membrane receptors? Correct
Answers 4
How much of the Calcium in plasma is bound proteins and other
molecules? Correct Answers About half
Name 3 key properties of a steroid hormone Correct Answers
Made on demand in ER or mitochondria, long 1/2 life, water
insoluble, diffuse into target cell
Name 3 key roles of Calcium Correct Answers Intracell signals,
neural excitability, muscle contraction, hormone secretion,
blood clotting, building and maintaining bone
Name that cell: large, mobile, multinucleate cells derived from
hematopoietic stem cells Correct Answers Osteoclasts
Name the 3 Naturetic peptides Correct Answers ANP, CNP,
BNP
Predict which receptor type causes the following effect on each
organ.
Glucose release from the liver. Correct Answers beta - 2
The mammary glands is the target organ for what hormone that
controls milk production in the female breast and is secreted by
the anterior pituitary? Correct Answers Prolactin
The thyroid gland is the target organ for what hormone secreted
by the anterior pituitary? Correct Answers Thyrotropin, TSH
Are catecholamines water soluble? Correct Answers Yes
Define antagonists. Correct Answers Competing ligands that
bind and block receptor activity
Define down regulation Correct Answers Cells bring receptors
into the cell in order to decrease cell responsiveness to high
ligand concentrations
Define first messenger. Correct Answers A molecule that brings
information to the target cell
Define signal transduction Correct Answers Process by which
an extracellular signal molecule activates a membrane receptor
that in turn alters intracellular molecules to create a response.
From what cell do endocrine and exocrine cells differentiate
from? Correct Answers Epitheleal cells
How are catecholamines released? Correct Answers Via
exocytosis
How do you make Calcitriol Correct Answers From Vitamin D
-> OH in liver then OH in kidney via Parathyroid Hormone
How is calcitriol production regulated? Correct Answers Effect
of PTH on the kidney
, How many categories are there for membrane receptors? Correct
Answers 4
How much of the Calcium in plasma is bound proteins and other
molecules? Correct Answers About half
Name 3 key properties of a steroid hormone Correct Answers
Made on demand in ER or mitochondria, long 1/2 life, water
insoluble, diffuse into target cell
Name 3 key roles of Calcium Correct Answers Intracell signals,
neural excitability, muscle contraction, hormone secretion,
blood clotting, building and maintaining bone
Name that cell: large, mobile, multinucleate cells derived from
hematopoietic stem cells Correct Answers Osteoclasts
Name the 3 Naturetic peptides Correct Answers ANP, CNP,
BNP
Predict which receptor type causes the following effect on each
organ.
Glucose release from the liver. Correct Answers beta - 2
The mammary glands is the target organ for what hormone that
controls milk production in the female breast and is secreted by
the anterior pituitary? Correct Answers Prolactin
The thyroid gland is the target organ for what hormone secreted
by the anterior pituitary? Correct Answers Thyrotropin, TSH
