Unit 1: Tissue Flashcards
All cells are in contact with extracellular macromolecules that make up the _______ (think of this as a big grid that holds the cells in place)
extracellular matrix
_____ are chemicals made by cells that affect other cells growth and activity.
cytokines
Migration of cells: Cells may travel in the body to ____ locations.
different
_____ is when cells travel to a site due to the effects of cytokines.
chemotaxis
Cytokines are chemicals produced by other cells at the ______ of injury.
target site
i.e. lymphocytes migrate due to the effects of lymphokines
Cells must communicate and recognize both undifferentiated and specialized cell as as being ______ status (self-host)
same-organism
Receptor proteins on cell surfaces serve as recognition _______.
identifiers
There are many types of ____ junctions.
cell
______ are cell junction bodies between cells.
Desmosomes
Tight junctions are cell junctions that prevent _____.
diffusion
____ junctions are types of cell junctions that enhance communication.
Gap
Cells are specialized, but lose ability to perform some functions, including _____ in the more highly differentiated.
replication
_____ yields the different types of tissues that make up the different organ systems.
differentiation
Specialized tissues arise out of the three _______.
embryonic tissue types
______ tissue develops into nerves, eyes, and skin.
ectoderm
_____ tissue develops into mesenchymal - muscle and GU)
mesoderm
_____ tissue develops into visceral organs.
endoderm
Epithelial tissue may be smooth, or have microvilli and/or ____.
cilia
______ tissue is organized into simple, stratified, or psuedostratified.
epithelial
Simple epithelial tissue is ____ layer.
one
Stratified epithelial tissue is ____ layer (s)
two
Pseudostratified epithelial tissue looks stratified but is ____ layer.
one
The three basic shapes of epithelial tissue are squamous, cuboidal, and _____.
columnar
Connective tissue (CT) makes up the body’s _____.
framework
Connective tissue is made up of ground substance (fluid/gel) with _______.
fibroblasts (produce fibers)
The three basic types of fibers found in connective tissue include collagenous, _____, and _____.
elastic
reticular
Collagenous fibers are not elastic, but ____.
protein
Elastic fibers are made of ____ protein and memranes.
elastin
Reticular fibers form the stroma or parenchyma (acutal tissue) of visceral organs and ______.
bone marrow
There are three types of _____ tissue that deal with all specialized movement (contraction/relaxation)
muscle tissue
The three types of muscle tissue.
skeletal
cardiac
smooth
Neural tissue is made up of neurons specialized for conduction and initiation of the ______ information processing and transmission.
electrical impulses
Neurons are made of cell body, the soma, axon(s), and _____.
multiple dendrites
Cells in tissues are usually _____ and have a specific cytoplasmic to nuclear ratio.
organized
Changes in tissues that result from cell changes include ______ with increased cell size and increased organelles to support the cell, but there is no increase in actual _____.
hypertrophy
cell number
____ is the reduction in cell size and organelles, but again, no change in cell number.
atrophy
_____ involves an increase in cell number.
hyperplasia
____ is the reversible replacement of one cell type with another and can lead over time to dysplasia (abnormal cells and organization), which in turn can lead to neoplasia (cancer).
metaplasia
Tissues undergo hyperplasia for _____ reasons.
various
Hormonal hyperplasia (female breast tissue response to female hormones of puberty and pregnancy) is a ____ form of hyperplsia.
physiologic
_______ hyperplasia (liver regenerates to replace lost tissue after surgical removal of a lobe of the liver) and is a form of physiologic hyperplasia.
compensatory
______ hyperplasia involves hyperplasia that can led to the continuum towardss dysplasia and neoplasia (cancer)
pathologic
One type of dysplasia is “carcinoma in situ” and is ____.
non invasive
Metaplsia may occur in some types of _____.
cancer development
One theory of cancer development is that the effects of _____ that damage DNA and the DNA is not repaired.
carcinogens
One theory of cancer development is that the effects of carcinogens that mutate prot-oncogenes, covert them to _____.
onccogenes (i.e. p53)
Cancer can also be endogenously produced substances (hormones) that promote the growth of ____.
tumors
In post Menopausal women, since the ovaries have stopped producing estrogen, the main source of estrogen is from body fat. THus, overweight PM women have more estrogen production. And, obese women are at higher risk of developing ______, a cancer that can be stimulated by estrogen.
breast cancer
There is a balance between protective (anti-cancer) factors and _____ factors in our environment and diet.
carcinogenic
Things that _____ carcinogenic activation include vitamin A, C, and E, selenium, cruciferous vegetables, geneistein (soy), and epigallocatechin gallate (green tea)
inhibit
_____ agents block activated carcinogens from accessing DNA target. Dietary initiators of detoxification enzymes: Plant phenols (ellogic acid, fruits, vegetables), Epigallocatechin gallate (green tea), Isothiocyanantes, flavones, and coumarins (all parts of plants)
inhibiting
Agents that inhibit _____ and progression include retinols, carotenids, protease inhibitors, phenols and polyphenols (fruits and vegetables).
promotion
Most theories of cancer consider the development to be a ______ from previous abnormal cell changes.
continuum
Hyperplasia to dysplasia to _____; metaplasia develps in some cancers.
neoplasia
Development of cancer as a continuum is the basis of ______ for abnormal cell types to intervene with therapeutics before outright cancer develops.
screening
With metastasis there are three ways to travel: direct invasion, hematologic, or _____.
lymphatic
Carcinoma in situ (CIS) is not invasive and remains in the place where it started, some people call it _____.
precancer
Most cancers travel to other parts of the body, this is called _____.
metastasis
Metastasis can be LOCAL (very close to the original cancer) or _____ (far away in the body)
distant
Metastasis can be locally invasive - traveling to adjacent tissues by ______.
direct invasion
The cancer cells can also travel further via _____ spread (in the bloodstream). Or they can travel via ____ spread (using lymph channels)
hematologic
lymphatic
There are common sites of distant metastasis and these cause ____ symptoms.
specific
Different types of cancer have ______methods of metastasis and also specific locations for metastasis. (i.e. ovarian cancer often goes to lung and _____)
preferred
bone
Cancer in the brain can cause symptoms such as headaches, seizures, and ______.
vertigo
Cancer in the _____ can result in lymphadenopathy.
lymph nodes
Cancer in the respiratory system can result in cough, hemoptysis, and _____.
dyspnea
Cancer in the liver can result in hepatomegaly and ______.
jaundice
Skeletal cancer can cause pain and ____.
fractures
_____ by healthy living and avoidance of cancer-inducing environmental factors (i.e. ionizing radiation)
prevention
If cancer is diagnosed, then the focus changes to prevent metastasis and _____.
recurrence
____ to determine histologic type of cancer and degree of invasiveness.
biopsy
____ to determine the histological type and spread of the cancer and is usually linked to choice of treatment and also prognosis.
staging
Staging of ovarian caner video
?
_____ node biopsy to determine spread to lymph nodes. The _____ is the watcher of the initial spread beyond the cancer site.
sentinel
sentinel
_____ of cancer means the cancer has reappeared in the body after completion of treatment or previous determination of no evidence of disease (____)
recurrence
NED
During general assessment of well-being and ability to perform activities of daily life (ADL) in the cancer patient. Various scoring systems exist, one commonly used is the ________ score.
WHO/ECOG/Zubrod
Karnofsky Scale
refer to notes pg 8
Zubrod Scale
refer to notes pg 8
Hypoxia (anoxia) are sometimes used ______.
interchangeably
Hypoxia means reduced ____.
O2
Anoxia means _____ of O2.
complete lack
Loss of oxygen means that aerobic respiration _____ (less ATP produced), than no ATP at all is produced when glycogen stores are depleted from using anaerobic respiration. Na/K pump and Ca pumps can’t work (require ATP) & cell swells with Na/Water; then Ca+2 enters cell and poisons mitochondria –> ____. Reversible until mitochondria is poisoned.
ceases
cell death
Conditions resulting from oxygen dysregulation such as _________ causing angina or infarct, coronary thrombosis causing infarct.
coronary ischemia
Conditions resulting from oxygen dysregulation such as cerebral ischemia (TIA) and cerebral infarct (_____)
thrombosis, CVA
A _____ is an uncharged atom or molecule that has a free unpaired electron; can be formed by ionizing radiation or _____ - these tend to want to combine with other chemicals and thus cause damage; in humans, secondary inflammation results due to release of toxic intracellular chemcials.
radical
chemicals