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HNF 461
exam 2
127
Other
Undergraduate 3
10/23/2008

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Cards

Term
The major apolipoprotein in HDL is
Definition
Apo A1
Term
Gastric lipase is important for the reasons 
Definition
  • It can act without need for bile salts
  • It hydrolyzes short chain FA
  • It is highly stable in an acid environment
Term
Functions of apolipoproteins

Definition
  • Stimulating enzyme reactions
  • Stablilizing lipoproteins in the blood
  • Conferring specificity for recognizing receptors
Term
Which hormone antagonizes lipolysis? 

Definition
Insulin 
 
Term
The conversion of linoleic acid to arachidonic acid involves
Definition
Delta 6 desaturase 

Term
Optimal LDL cholesterol is
Definition
100mg/dl
Term
Plants have more ___ desaturase than __ desaturase
Definition
Delta 9, Delta 12 

 
Term
Eicosapentaeonic acid is  

Definition

C20:5 (n-3)

Sources: Marine Algae, fish oil 

Term
Essential fatty acids are concentrated in  

Definition
Phospholipids
Term
A major PUFA in  phosphatidylinositol is

Definition

C20:4 (n-6) 

Arachidonic acid

Term
A person with elevated fasting blood triglycerides

Definition
  • should increase the % fat in the diet
  • should consume fiber rich foods
Term
Dietary Guidelines for Lipids
Definition
  • 20-35% of energy
  • <10% saturated fatty acids
  • <300 mg cholesterol
Term
Consumption of ___ will ___ hepatic LDL receptor content

Definition
C14:0 (myristic acid), lower

Term
Foam cells are derived from  

Definition
Smooth muscle cells 

Term
It is desirable to have a ___apo B and a ___ apo A1 concentration in the blood when fasting

Definition
Low, High

Term
Most people___more cholesterol than they___cholesterol

Definition
Excrete, consume

Term
A HDL cholesterol concentration of ___mg/dl is a CVD risk factor

Definition
<40

Term
This lipoprotein carries cholesterol to tissues for steroid hormone synthesis
Definition
LDL

Term
This enzyme esterifies cellular cholesterol
Definition
ACAT

Term
Palmitic, stearic, oleic, and linoleic acids account for ___% of dietary intake
Definition

>90 


Term
Most of the fat (lipid) in your body is in what form?
Definition
Triglycerides are 95% of dietary fat
Term

C18:3 n-3 is  ______ acid.

Definition
α-linolenic
Term

C18:1 is ____acid 


Definition
Oleic
Term

The food with the greatest percentage of oleic acid (C18:1) is

Definition
  • Olive Oil
  • Sources are animal and plant fats
Term

The desirable level for total cholesterol in blood is

Definition
< 200 mg/dl
Term

Which food has the least cholesterol per serving?

Definition
Avacado
Term

The desirable level for LDL cholesterol in blood is

Definition
< 100 mg/dl
Term
Total Cholesterol is considered high at ____mg/dl
Definition
240
Term
HDL cholesterol is considered low at ___ mg/dl and high at ___mg/dl
Definition
40, 60
Term
Dietary Guidelines for PUFA
Definition
No more than 10 %
Term
If long term fasting ___% of the energy can be derived from ketones
Definition
40-50
Term
Ethyl alcohol has ___ kcal/gram
 

Definition
7
Term
Microsomal Ethanol Oxidizing System (MEOS)
Definition
  • Occurs in microsomes
  • Active when high alcohol intake
  • Yeilds H2O rather than NADH

Term
About ___% of lipid digestion occurs in the stomach
Definition
15
Term
Ketones are ketoacids, and thus may ____ blood pH
Definition
Lower
Term
Apo B is associated with
Definition
LDL
Term
If lung and/or kidney function (ex. diabetes,pnemonia)are compromised one may go into  
 
Definition

Acidosis

Term
This lipid is exceptionally high in  saturated fatty acids
Definition

Coconut oil

 

Term
This lipoprotein has the highest % cholesterol
Definition
LDL
Term
During reverse cholesterol transport ___ esterfies cholesterol
Definition
LCAT
Term
Plants ___ make cholesterol
Definition
Can not
Term
_____ are the major form of lipid in the human body 
Definition
Triglycerides
Term
Bile acids are synthesized from ___.
Definition
Cholesterol
Term
Chylomicrons 
 

Definition
Carry dietary cholesterol to the liver 

Term
Chylomicrons contain primarily 
Definition
Triglycerides
Term
VLDL's
Definition
Generate LDL particles in the blood
Term
n-3 fatty acids
Definition
are stored in phospholipids
Term

VLDL is synthesized

 

Definition
in the liver
Term
Hepatic LDL receptor content will ___ with consumption of___.
Definition
increase, C18:2 (linoleic acid)
Term
A person with elevated apolipoprotein ___ is at increased risk for CVD. 
Definition
E4
Term
This lipoprotein is active in "reverse" cholesterol transport
Definition
HDL
Term
Myristic acid is
Definition
  • C14:0
  • sources are coconut and palm nut oils, plant and animal products
Term
Palmitic acid is 
Definition
  • C16:0
  • Sources are andimal and plant fats 
Term
A plasma triglyceride concentration of ____ mg/dl is a CVD risk factor
Definition
>100
Term

This lipoprotein has the highest % protein 


Definition
HDL
Term
This lipid is high in omega-3 fatty acids
Definition
Canola oil
Term
___% of bile acids are recycled
Definition
90
Term
Acetoacetate
Definition
may be used to synthesize acetyl CoA
Term
This apoprotein helps stimulate lipolysis in chylomicrons  
 
Definition
Apo C2
Term
Bile acids are secreted in the
Definition
duodenum
Term
We have about ___ times the amount of n-6 than n-3 in the body
Definition
10
Term
C20:4 (n-6) is ___Acid
Definition

Arachidonic

 

  • Sources: small amounts in animal fats
Term
Eicosanoids are ___ like compounds
Definition
Hormone
Term

Which lipoprotein would be transporting triglycerides 12 hours after you consumed a fat containing meal?

 

 

Definition
VLDL
Term
IDL's are formed when ____is removed from ____.
Definition
TG, VLDL
Term
A physically active person would have______.
Definition
  • increased lipoprotein lipase in skeletal muscle
  • increased VLDL TG clearance
Term
Inactive, overweight males often have low concentrations of ____ in their blood.
Definition
HDL - cholesterol
Term

(T of F)

Eiscosinoids are synthesized from DHA.

Definition

False

 

Eicosinoids are formed from arachidonic acid (C20:4)(n-6)and EPA (C20:5)(n-3)

Term
A mutation in which apolipoprotein-E is most often to elevate blood cholesterol
Definition
Apo E4
Term
The most effective means of removing cholesterol from the body is to _____.
Definition
Increase bile acid excretion in the stool
Term
Drugs that are statins decrease LDL cholesterol in the blood by
Definition
(need to look up)
Term
The N-3 fatty acids are associated with
Definition
  • Reduced heart arrhythmias
  • Reduced atherosclerosis
  • Decreased platelet aggregatin
  • Decreased plasmatriacylglycerol
  • Slightly increase HDL
  • Decrease proinflammatory eicosanoids


 

Term

Prostaglandinscan be directly synthesized from

Definition
arachidonic and EPA


Term
The food with the greatest percentage of lauric acid (C12:0) is


Definition
coconut oil
Term
Which lipoprotein carrys cholesterol from the liver to the ovaries to synthesize estrogens?


Definition
LDL
Term
Elevated carbohydrate intake leading to obesity mostoften leads to high levels of which lipoprotein in fasting blood samples?
Definition
VLDL
Term
Dietary modification for a person with levels of chylomicra in fasting blood include:
Definition
  • using medium chain triglycerides with C10 and C 12 fatty acids to fry and bake foods
  • restricting intake of animal fats as much as possible
  • restricting intake of vegetable oils as much as possible
Term

Prostaglandins are fomed in

 

Definition

endotheial cells

(Cardiovascular)

Term
Thromboxanes are formed
Definition
platelets
Term
Leukotrienes are formed in 
Definition
smooth muscle cells  (vascular, intestinal, uterus, lungs)
Term
Which lipoprotein would be transporting the vitamin A,D,E and K that you comsumed in a meal 4 hours prior to the blood sample?
Definition
Chylomicra
Term
The three families of eicosanoids are:
Definition
  • Prostaglandins
  • Thromboxanes
  • Leukotrienes

 

Term
Which dietary fatty acid is the most atherogenic?
Definition
Myrisitc acid
Term
Most of the conversion of IDL to LDL (TG removal) occurs in
Definition
Blood capillaries
Term
Which enzyme hydrolyzes triglycerides in adipose cells to produce NEFAs?


Definition
Hormone sensitive lipase
Term
We have ____ arachidonic acid in the diet.

Definition
very little
Term
Lipid digestion is faciltated by _____.


Definition
increased surface area of ilpid droplets through the action of bile acids


Term
High blood insulin favors
Definition
storage of triglycerides in the adipose cell
Term
Colipase
Definition

Facilitates pancreatic lipase associated with TG's


 

 

Term

Thromboxane A3 is synthesized from a fatty acid found primarily in

Definition
Salmon
Term

If a person obtains most of their protein from beef, pork, and poultry products and has a limited intake of vegetable oils such as corn, soybean, sesame, or sunflower, they will probably have elevated fasting blood cholesterol concentrations because this type of diet

Definition
Leads to fewer LDL receptors on liver cells
Term

Consuming soluble fiber will lower LDL-cholesterol in some individuals, but not in all individuals. What else can contribute to the cholesterol lowering effect? 


 

 

Definition
  • An increase in cholesterol excretion in the stool
  • An increase in bile acid excretion in the stool 

Term
To lower simple sugar intake more ____ would be beneficial.
Definition
complex carbohydrates
Term
Saturated fatty acids tend to ____ LDL cholesterol
Definition
raise
Term
Polyunsaturated fatty acids tend to ____ LDL cholesterol
Definition
lower
Term
Bile acids are formed in the _____
Definition
liver
Term
Cholesterol can be synthesized in the ___ or taken from the ___
Definition
Liver, blood
Term
_____ are a preferred substrate for the ACAP.
Definition
Polyunsaturated fatty acids
Term
N-3 reduce _____
Definition
inflammation
Term
Fish oil ____ VLDL synthesis
Definition
reduces
Term
Apo ___ is associated with elevated LDL cholesterol
Definition
E4
Term
____ will convert steric acid to oleic acid
Definition
Delta 9 destaturase
Term
Chylomicrons deliver cholersterol to the _____
Definition
liver
Term
LDL is synthesized
Definition
from VLDL in the blood by lipoprotein lipase action
Term
Beta Hydroxybutyrate
Definition
may be used to synthesize acetyl coA
Term
Triglycerides are hydrolyzed by ____.
Definition
Hormone sensitive lipase
Term
Hormone sensitive lipase is activated by glucagon and epinephrine through _____.
Definition
Phosphorylation
Term
The free fatty acids do not go to the _____ cells
Definition
red
Term
Fatty acid oxidation occurs in the _____.
Definition
mitochondria
Term
____ is used to transport the fatty acid across the membrane
Definition
Carnitine
Term
Ketone formation only occurs in the
Definition
liver
Term

A person with a blood glucose of ___ mg/dl 2 hours after consuming 75 g glucose would be classified as ___.

 

Definition
199, prediabetic
Term
During type 2 diabetes ____ is hyperactive.
Definition
Glycogenolysis

Term
____ may denature enzymes.
Definition
Acetaldehyde
Term
_____ influence membrane fluidity.
Definition
PUFA
Term
The leading contributers of cholesterol to the North American diet are:
Definition
Beef, eggs, whole milk
Term
Beta Hydroxybuturate
Definition
  • Is formed in the liver
  • It is used in the heart
Term
____ is a lipid filled cell
Definition
Foam cell
Term
Apo B100 is found on
Definition
LDL, VLDL, IDL
Term
Apo C2 is found in
Definition
VLDL, chylomicrons
Term
Apo E is found on
Definition
chylimicrons, VLDL, LDL, HDL
Term
Apo A1 purpose is to
Definition
Activate LCAT
Term
The ____ system counts from the carboxyl end.
Definition
delta
Term
The ____ system counts from the methyl end.
Definition
Omega (N)
Term
Bile acids are secreted into the intestine, reabsorbed in the ____.
Definition
illium
Term
Chylomicrons are synthesized in the
Definition
intestine
Term
Chylomicrons are metabolized by
Definition
lipoprotein lipase
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