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Past Exam
Q&A
54
Anatomy
04/14/2010

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Term
These are "identification tags" that label every cell of your body as belonging to you
Definition
Major histocompatibility complex proteins
Term
Suppose 1 molecule of hormone X activated 10 G proteins, each G protein activated 10 adenylate cyclase molecules, etc. etc. This is an example of...
Definition
Enzyme amplification
Term
Neurons called osmoreceptors trigger secretion of
Definition
Antidiuretic hormone
Term
The stage of exhaustion in the stress response occurs after months of stress and the body's homeostatic conditions deteriorate rapidly when
Definition
The energy demands are met primarily by protein metabolism
Term
Pathogens are prevented from spreading from an infected area by
Definition
Fibrin
Term
Lymph nodes in the cervical area that are temporarily swollen and painful to the touch most likely indicate
Definition
Inflammation or infection localized in that area
Term
What is the target organ of corticotropin-releasing hormone?
Definition
Anterior pituitary
Term
Which of the following is located most inferiorly?
Definition
Adrenal gland
Term
Lymphocytes are _____ once they have developed surface receptors for a particular antigen?
Definition
Immunocompetent
Term
Which of the following hormones passes through the hypothalamo-hypophseal tract?
Definition
Antidiuretic hormone
Term
Hypersecretion of GH can cause gigantism if it begins in childhood, but is more likely to cause ____ if it begins in adulthood
Definition
Acromegaly
Term
The stress response, or general adaptation syndrome (GAS), primarily involves the elevated levels of these two hormones
Definition
EP and cortisol
Term
Which of the following correctly traces the four conditions from cause to effect?
Definition
Insulin hypo-secretion to accelerated fat catabolism to ketonuria to diuresis
Term
When lymphocytes called NK cells are "on the lookout" for abnormal cells such as cancerous cells or infected with virus cells, NK releases ______, which make holes in cell membrane of abnormal cells
Definition
Perforins
Term
Parathyroid hormone is antagonized by...
Definition
calcitonin
Term
The thyroid follicles store and secrete ______, while C cells secrete _______.
Definition
thyroid hormone, calcitonin
Term
Lymphocytes similar to T-cells, but called _____ recognize and destroy tumors in a nonspecific fashion, without requiring prior exposure to tumor antigens
Definition
NK cells
Term
Calcium metabolism is regulated by
Definition
parathyroid glands
Term
Lymphatic trunks converge to form right lymphatic duct and thoracic duct, these drain into
Definition
subclavian veins
Term
The highest pressure that moves substances into the capillary is...
Definition
blood colloid osmotic pressure
Term
Complement C3b protein coats bacteria and stimulates phagocytes by _______ in a process called _____.
Definition
Neutrophils and macrophages; opsonization
Term
Lymphatic system returns about ______L of fluid back to the circulatory system each day.
Definition
2-4
Term
Most of the following hormones bind to receptors at the cell surface except ____ which binds to the receptor at the cytoplasm
Definition
Testosterone
Term
Which of these is not one of the cardinal signs of inflammation?
Definition
Fever
Term
The uterus is the target organ of
Definition
oxytocin
Term
When an antigen triggers multiplication of B lymphocytes some daughter cells transform into the antibody-producing cells and mount an attack, while others become
Definition
memory cells
Term
Response to stress, adrenal cortex releases cortisol. What stimulates cortisol?
Definition
The hypothalamus releases CRH to the anterior pituitary, which then releases ACTH
Term
Eicosanoids are a family of paracrine secretions derived from
Definition
arachidonic acid; cell membrane
Term
Valves are found in
Definition
Veins and lymphatic vessels
Term
Medullary ischemic reflex results in
Definition
Increased circulation to the brain
Term
a biogenic amine
Definition
thyroxine
Term
before B lymphocyte can secrete antibodies, it must transform it into
Definition
plasma cell
Term
angiotensinogen is converted to angiotensin I by
Definition
renin
Term
polypeptide precursor that is split up also forms
Definition
ACTH
Term
endocrine gland most affected by stress
Definition
adrenal cortex
Term
MALT is lymphatic tissue found in places like
Definition
digestive mucous
Term
Autoregulation regulates
Definition
blood flow through individuals
Term
T4 =?
T3 = ?
Definition
T4 = 90%
T3 = the one that affects target cells
Term
Noninsulin dependent diabetes results when
Definition
insulin is secreted but target cells lack receptors for it
Term
An infant suckling at mom's breast will stimulate mothers hypothalamus to secrete _____, which is carred down the _____, and stimulates ______
Definition
OT; hypothalamo-hypophyseal tract; milk ejection
Term
Insulin-like growth factors, or somatomedins, are secreted in response to
Definition
growth hormone
Term
One has been losing weight, and showing signs of anemia. WBC count revealed an elevated eosinophil count. What's wrong?
Definition
parasitic infection
Term
____, target cell reduce the number of receptors for a hormone in response to longterm stimulation
Definition
downregulation
Term
In an area of injury, leukocytes adhere to endothelium, which is called _______, and then squeeze through spaces between endothelium cells into interstitial fluid, which is called _________.
Definition
Margination; diapedesis
Term
Polypeptides stimulate cells to produce antiviral proteins and activate NK cells and macrophages
Definition
interferon
Term
Neutrophils produce a respiratory burst, which destroys more bacteria that can be destroyed by phagocytosis. Respiratory burst results from the formulation of a ______ that reacts with H+ to form __________.
Definition
Superoxide anion; hydrogen peroxide
Term
Complement C3 a protein stimulate mast cells and basophils to promote_______, and complement C3b trigger stimulation of proteins called ______.
Definition
Inflammation; membrane attack complex
Term
Special lymphatic vessels called lacteals absorb dietary ____ that cannot be absorbed through the capillaries
Definition
Lipids
Term
T3 and T4... 3 and 4 refer to
Definition
number of iodine atoms
Term
Formed elements most directly responsible for humoral immunity are
Definition
B lymphocytes
Term
Autoregulation hypothesis links blood flow to stretch of vascular smooth muscle
Definition
myogenic hypothesis of autoregulation
Term
T cells become immunocompetent during their stay in the
Definition
thymus
Term
Main antigen presenting cells in the body are
Definition
macrophages
Term
Thymus secretes hormones ________, which regulate ______.
Definition
Thymopoietin and thymosin; T lymphocytes