binds to receptors on target cells
how does a hormone affect its target cells
hormone
chemical molecules that control growth, reproduction, and nutrient use.
adrenocorticotropin hormone (ACTH)
which hormone targets the adrenal glands
insulin
what hormone opposes glucagon's effect
growth hormone (GH)
influences height and helps build bones and muscles; pituitary gland
epinephrine
regulates metabolism attention, focus, panic, and excitement; adrenal gland
prolactin
milk production, development of mammilary glands; pituitary gland
oxytocin
stimulates uterine contraction in childbirth, stimulates breast tissue contraction in milk production;
pituitar ygland
thyroid-stimulating hormone (TSH)
regulates the production of hormones by the thyroid gland
stimulates thyroid gland to secrete TSH
what does an increase in thyrotropin-releasing hormone (TRH) usually cause?
GH
the absence of what hormone in children leads to a failure of bone and muscle enlargement?
adrenal gland
what endocrine organ secretes aldosterone
hyperparathyroidism
what condition leads to the release of parathyroid hormoen (PTH)
diabetes
what condition leads to the lack of release of insulin?
, feeds back to decrease production
how does a negative feedback mechanism regulate the endocrine system?
blood composition
Plasma, red blood cells, white blood cells, platelets
formed elements
cell and cell fragments suspended in plasma; made of red blood cells, white blood cells, platelets
45
what percent of blood is made of formed elements
55
what percent of blood is made of plasma
thrombocytes
what formed elements in blood form the platelet plug
red blood cells
what are erythrocytes?
erythrocyte function
what transports oxygen to the blood and gets rid of carbon dioxide
hemoglobin
what protein, found in erythrocytes, binds and helps deliver oxygen
hematocrit
the ration of red blood cells to the total blood volume
7.35-7.45
what is the range of normal blood pH
all derived from HSC in bone marrow
how are all formed elements in blood related to hematopoietic stem cells(HSC)?
major function of lymphocytes
antibody production, immune response regulation, direct cell-mediated killing of tumors and virus-
infected cells
neutrophil