Cellular/Tissue Biology Flashcards
During _________ the negative polarity of the resting membrane potential is reestablished.
repolarization
____ ____ can persist in dead cells due to lysosomes being unable to break it down.
Uric Acid
The ____ _______ enzyme is responsible for the chemical buffer system that helps convert bicarbonate and the hydronium ion into _______ _______
- Carbonic Anhydrase, 2. Carbon Dioxide
Homeostasis tries to keep the body in a healthy state of balance by regulating _____ , ______ , and ______
- Acid-base balance, 2. Temperature , 3. Membrane electrical charges
The three kinds of cell deaths include:
- Necrosis, 2. Apoptosis, 3. Nutritional starvation of the cell
Necrosis can be categorized as four major types:
- Liquefactive, 2. Coagulative, 3. Caseous, 4. Fatty
______ occurs when oxygen is not restored within the cell causing cavities to develop within the cytoplasm
Vacuolation
When digested, Fats are broken down into _____ and ______
- fatty acids, 2. glycerol
______ _______ prevent diffusion among cells
Tight Junctions
A stable internal environment.
Homeostasis
During Hypothermia, studies have shown that ____ is increased due to decreased perfusion of the heart due to increased ____ concentration.
- ROS, 2. Superoxide
Two common areas for proteins to accumulate include:
- Epithelial cells of the renal convulated tubule, 2. B Lymphocytes
The human body is about _____ percent water or around _____ liters per average adult
- 57, 2. 40
The amount of hydrostatic pressure required to oppose osmosis is known as ________ of a solution
Osmotic Pressure
Exocytosis is the ________ or _______ of material from intracellular vesicles at the cell surface
Secretion or discharge
One important aspect of the cell membrane is that it is _____ __________ which will allow certain things to pass through such as water and lipids but not _____ or water soluble solutions such as ____ and ____ without a means of diffusion or binding to channels.
- Semi-permeable, 2. Ions, 3. proteins, 4. carbohydrates
Any other body cell that is not related to egg cells are reproduced through the processes of _______ and _________
- Mitosis, 2. Cytokinesis
When it comes to membrane transport, passive transport differs from active transport where molecules will flow from an area of ______ concentration to an area of _____ concentration
- High, 2. Low
In _____ feedback systems, the body will produce as much as it needs to carry out a function, this isn’t the case in every system and can sometimes be the result of a pathological issue.
Positive
If unconjugated bilirubin binds to the plasma membrane of a cell, it could injure the cell by two methods:
- Causing a loss of cellular proteins, 2. Uncoupling of oxidative phosphorylation
A ____ will resist changes to the acid-base balance
Buffer
The body is mainly composed of three embryonic types of tissues. The ____ is found in the nerves, eyes and skin. The ______ is mesenchymal and located in muscles and the genitourinary tract. The _____ is found prominently in visceral organs.
- Ectoderm, 2. Mesoderm, 3. Endoderm
What are the two major second messenger pathways?
- cAMP (cyclic adenosine monophosphate) , 2. Ca++
_____ is the movement of cells/organisms and this process is facilitated by _____ _____ to allow movement in and out of cells.
- Chemotaxis, 2. Adhesion Molecules
__________ is defined as an increase in cell size and is classified as either pathological or physiological.
Hypertrophy
CAMs (Cell Adhesion Molecules) are comprised of what four protein families?
- Integrins, 2. Cadherins, 3. Selectins, 4. immunoglobins
A mechanism of the ER (Endoplasmic Reticulum) that can measure cell stress is known as _________
UPR (unfolded protein response)
Oxygen, Carbon Dioxide and Steroid Hormones are examples of _____ molecules
nonpolar
Smooth Endoplasmic Reticulum is involved in the synthesis of these hormones:
Steroid Hormones
When using direct cell to cell communication, ___ _____ are a good example of allowing certain cells such as ____ or _____ cells to be able to synchronize contractile responses or facilitate action potential via ion transport.
- Gap Junctions, 2. Muscle, 3. Uterine
When acids create hydrogen ions/bases, acids ending in ___ will create bases ending in ___ or become what the parent acid was prior to dissociation.
- ic, 2. ate
_______ or Connective Tissue Cells, create these three kinds of fibers: _______ , ________ , and ______
- Fibroblasts, 2. Collagen, 3. Elastin, 4. Reticular
Two types of hyperplasia include _________ and ________ with the latter primarily affecting estrogen dependent organs.
- Compensatory, 2. Hormonal
______ is defined as a complete lack of oxygen.
Anoxia
Even when oxygen is restored to the cell, the presence of reactive oxygen intermediates can cause damage to the cell membrane and overload the mitochondria with calcium by ________ ______
Reperfusion (Reoxygenation) Injury
The _____ ______ utilizes signaling to allow an outside chemical to make contact with a cell and form a second chemical on the inside which typically is ____ or ___ that will carry out the message to the cell, which is then broken down by ____
- Second Messenger, 2. cAMP, 3. cGMP, 4. phosphodiesterase
The total number of ______ is fixed in the nervous system at birth and cannot be replaced.
Neurons
In adults, the majority of fluid volume is _____ the cell while children tend to have more fluid _____ the cell
- Outside, 2. Inside
Peroxisomes get their name by using enzymes that utilize ______ to remove hydrogen from specific substrates which produces Hydrogen Peroxide (H202)
Oxygen
The most common site for lipids to accumulate is in the ________
Liver
Reproduction of ______ (sperm and egg cells) occur through the process of _________
- gametes, 2. meiosis
Enzymes are a type of _____ that typically end in the letters ___
- Protein, 2. ‘ase’
The most obvious signs of ______ death include the cessation of _______ and ________
- Somatic, 2. Respirations, 3. Circulation
Atrophy can be classified as _______ or ________ despite cells showing the same basic changes.
Physiological, Pathological
ATP (Adenosine Triphosphate) not only stores energy but also _______ energy
transports
The two types of solutes include _____ and ______
Electrolytes and non electrolytes (glucose, urea, creatinine)
Intracellular ________ is the main protector against mercury induced CNS and kidney damage.
Glutathione
ROS can be inactivated by the enzyme _________ __________
Superoxide Dismutase (SOD)
The space between cells within tissues are separated by _____ _____
Interstitial Fluids
The Peroxidative Reaction Formula is: (Or removal of a hydrogen)
H2O2 + R1H2 -> R1 + 2H2O2
______ is digestion of any food stuff in its smallest form, i.e. amino acids. which takes place _____ the cell. (Think of this from a cellular standpoint and not a ‘respiratory’ standpoint which is ventilation.)
- Respiration, 2. Inside
This vitamin affects amino acid transfer reactions
Pyroxidine (B6)
Three types of epithelial cell layers include ______ , _______ , and ________
- Simple, 2. Stratified, 3. Pseudo-stratified
Functions of the Nucleus include: _____, ______, and _______
Cell division, control of genetic information, and replication/repair of DNA
Tissue with ______ are less likely to be affected by radiation due to the lack of ____ produced by radiolysis of water
- hypoxia, 2. ROS
One example of a protein buffer found in red blood cells includes _____ which acts as an _____ since it is INSIDE the cell
- Hemoglobin, 2. Anion
________ ________ is considered the most common chemical asphyxiant
Carbon Monoxide
Cancer cells are known to travel by three methods:
- Direct Invasion, 2. Hematologic (bloodstream), 3. Lymphatic Channels
These junctions enhance communication among cells
Gap Junctions
During metabolic failure due to ______ , the lack of _____ permits excessive influx of _____ into the cell which will also bring in more _______
- Hypoxia, 2. ATP, 3. Sodium, 4. Water
A ______ is a chemical made by cells that can affect other cells’ growth and activity.
Cytokine
_____ is defined as the number of charges a charged molecule has
Valence
Most of the ATP that is generated occurs during the __________________
Citric Acid Cycle (Krebs)
a rectal temperature of _____ due to heat sroke is considered life threatening.
41C (106F)
Since 2001, no active vaccines contain _______ which is a derivative of _____ ______ with the exception of the inactivated influenza vaccine.
- Thimerosal, 2. Ethyl Mercury
Heat-shock proteins tag certain proteins with ______ when it is time for the protein to be degraded
ubiquitin
___ gangrene is often caused by an infection from the _____ species
- Gas, 2. Clostridium