Exam 1 Flashcards
Hormone regulates gamete production
FSH
Steroid of Amino Acid based
Hormones
Primary function is to control the rate of body metabolism and cellular oxidation
TH
Synthesizes insulin
Pancreas
Consists of adenohypophysis & neurohypopysis
Pituary Gland
Controlled by sympathetic nervous system/releases non-epi and epi
Adrenal Medulla
Regulates the endocrine activity of the cortex portion of the adrenal gland
ACTH
Breast development and maintains lactation after child birth
Prolactin
Hormone produces in the adrenal cortex that enables body to resist long term stress
Glucocorticoid
Gluconeogenesis occurs in the liver due to…
Cortisol
All proteins or amino acid based hormones exert effects through..
Intracellular Second Messengers
An example of a hormone which releases via positive feedback control mechanism is..
Oxytocin
Consists of adenohypophysis(anterior) & neurohypopysis(posterior)
Pituary Gland
An example of a hormone which releases via positive feedback control mechanism is..
Oxytocin
Prolonged exposure to high hormone concentration causes..
Down-regulation
The neurohypophysis (posterior) is not a TRUE endocrine gland because..
It is a hormone storage area that receives hormones for release
The neurohypophysis (posterior) is not a TRUE endocrine gland because..
It is a hormone storage area that receives hormones for release from hypothalmus
The neurohypophysis (posterior) is not a TRUE endocrine gland because..
It is a hormone storage area that receives hormones for release from hypothalmus
Entering the nucleus of a cell and initiating or altering the expression of a gene is called
Steroid
Binding to specific receptors and employing services of G-proteins and cAMP is called
Second Messenger mechanism of hormone action
Diffuse easily into target cells…
Steriod and Thyroid Hormone
Thyroid Hormone is a small iodinated amine that:
enters the target cells
Growth Hormone targets..
Bone and skeletal muscles
Which organ responsible for synthesizing ANP
The heart
Minerocorticoid is to aldosterone as glucocorticoid is to _________.
Cortisol
Regulator of electrolyte concentration in extracellular fluid..
Aldosterone
Name 3 second messengers..
Cyclic AMP, Cyclic GMP, and Inositol triphosphate
Name 3 second messengers..
Cyclic AMP, Cyclic GMP, and Inositol triphosphate
An amino acid derivative can be a ___.
hormone
When body requires increased levels of a hormone, the DNA target cells synthesize more receptors, this is called:
Up-regulation
Thyroid hormone affects what organ:
Liver lover
Does thyroxine require a second messenger?
No
Does thyroxine require a second messenger?
No
Glucocortocoids enable the body to deal with stress, how do they do this?
Increasing blood pressure…..blood glucose, fatty acid and amino acid levels!
Glucocortocoids enable the body to deal with stress, how do they do this?
Increasing blood pressure…..blood glucose, fatty acid and amino acid levels!
Ion sometimes used as second messenger of amino acid based hormones:
Calcium
Ion sometimes used as second messenger of amino acid based hormones:
Calcium
Catecholamines and peptide hormones bind to receptors on the surface of cells that compromise target organs. What does this binding cause?
Adenylate cyclase to generate cyclic AMP from ATP
Catecholamines and peptide hormones bind to receptors on the surface of cells that compromise target organs. What does this binding cause?
Adenylate cyclase to generate cyclic AMP from ATP
What is the test called to measure anemia?
Hematocrit
Platelets are fragments of large ‘multi-nucleated’ cells know as:
Megakaryotes
No observable cytoplasmic granules is called:
Agranules
No observable cytoplasmic granules is called:
Agranules
Insoluble compound that forms meshwork and is considered the structural basic of clot formation:
Fibrin
Insoluble compound that forms meshwork and is considered the structural basic of clot formation:
Fibrin
Another name for agglutinations? Agglutinations are proteins in the plasma.
Anti-bodies
Another name for agglutinations? Agglutinations are proteins in the plasma.
Anti-bodies
Leaukocytes move in and out of blood vessels to reach sites of inflammation, this is called:
Diapedesis
Leaukocytes move in and out of blood vessels to reach sites of inflammation, this is called:
Diapedesis
Nucleated cells that are formed in the bone marrow whose #’s avg 4k-11k per uL of blood
Leukocytes
Nucleated cells that are formed in the bone marrow whose #’s avg 4k-11k per uL of blood
Leukocytes
Mature, ‘Anucleate’ cells whose #’s avg 4.5 to 5 million per uL of blood:
Erythrocytes
Nonliving fluid matrix portion of blood:
Plasma
Technical name for blood clot:
Thrombus
What type of tissue is blood?
Connective tissue
What type of tissue is blood?
Connective tissue
Adult has an avg of how much blood?
5.5L
Least common blood type to Blacks and Asians…
AB
Process of blood clot formation…
Homeostasis
Whole blood is composed of plasma and ______.
Formed Elements
The largest of the leukocytes is called..
Monocytes
The smallest leukocytes are called…
Lymphocytes
Determine Hematocrit: Column height is 50mm to start. After spinning, bottom layer of tube is containing cells is 20mm/the top layer contains 30mm. What is the hematocrit value?
40
Determine Hematocrit: Column height is 50mm to start. After spinning, bottom layer of tube is containing cells is 20mm/the top layer contains 30mm. What is the hematocrit value?
40
What is the name for reduced hemoglobin? This is the form of hemoglobin that results after oxygen diffuses into the blood.
Oxyhemoglobin
This Leucocyte is present in high amounts when a patient has a parasitic infection.
Neutrophil
Hemoglobin measure within normal range is:
16 g/100 ml
Do monocytes have granules?
No
Erythrocyte development in order is:
Proerythroblast, Late erythroblast, normoblast, reticulocyte
Erythrocyte development in order is:
Proerythroblast, Late erythroblast, normoblast, reticulocyte
The slowest step in the clotting process is called:
Formation of prothrombin activator
Lack of intrinsic factor, leading to deficiency of vitamin B12 and large pale cells called macrocytes, is a characteristic of:
Pernicious anmeia
Sequence of clotting:
Formation of thromboplastin, prothrombin to thrombin, fibrinogen to fibrin, Clot retraction
Explain AB positive blood:
No antibodies to A or to B. -or- to Rh antigens in the plasma.
What is a precursor of a basophil?
Myeloblast
What is a precursor of a basophil?
Myeloblast
What causes the ‘sickling of red blood cells’ in people with sickle cell disease?
High altitude and vigorous exercise
When will erythroblastosis fetalis not happen:
Rh negative mother and Rh negative father