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what is the difference in composition between blood plasma, tissure fluid and lymph?
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AS biology
- Thread starter zarasattar
- Start date
tissue fluid : form from the blood plasma that leaks out through the gaps into between cell walls of capillaries
have
- white blood cells
- nutrients, ie. glucose, ions
- water
- waste products
does not have
- red blood cells
- protein molecules
Lymph
have
- white blood cells
- a little protein
- fats
- antibodies
- water
as lymph is forms from 10% of the tissue fluid that did not flow back into the blood capillaries. whatever that is not present in the tissue fluid cannot be found in the lymph. plus, EVERYTHING is inside the blood plasme
have
- white blood cells
- nutrients, ie. glucose, ions
- water
- waste products
does not have
- red blood cells
- protein molecules
Lymph
have
- white blood cells
- a little protein
- fats
- antibodies
- water
as lymph is forms from 10% of the tissue fluid that did not flow back into the blood capillaries. whatever that is not present in the tissue fluid cannot be found in the lymph. plus, EVERYTHING is inside the blood plasme
tissue fluid...
no rbcs...though WBCs present.....higher pCO2...lower pO2....lower glucose conc. than blood thus mantaining diffusion gradient
in blood....u get proteins...like fibrinogen...immunoglobulins...and u have r.b.cs ..u get low pCO2....LYMPH HAS W.B.Cs..more fat than tissue fluid...b/c fats come from lacteal....i guess this will score all the 4 marks
no rbcs...though WBCs present.....higher pCO2...lower pO2....lower glucose conc. than blood thus mantaining diffusion gradient
in blood....u get proteins...like fibrinogen...immunoglobulins...and u have r.b.cs ..u get low pCO2....LYMPH HAS W.B.Cs..more fat than tissue fluid...b/c fats come from lacteal....i guess this will score all the 4 marks
hmm dix all plzz itx urgent
(r) describe the external and internal structure of the mammalian heart;
(s) explain the differences in the thickness of the walls of the different chambers in terms of their functions;
(t) describe the mammalian circulatory system as a closed double circulation;
(u) describe the cardiac cycle;
(v) explain how heart action is initiated and controlled (reference should be made to the sinoatrial node, the
atrioventricular node and the Purkyne tissue)
(r) describe the external and internal structure of the mammalian heart;
(s) explain the differences in the thickness of the walls of the different chambers in terms of their functions;
(t) describe the mammalian circulatory system as a closed double circulation;
(u) describe the cardiac cycle;
(v) explain how heart action is initiated and controlled (reference should be made to the sinoatrial node, the
atrioventricular node and the Purkyne tissue)
structure of mammalian heart:
made of cardiac muscle which is formed from interconnecting cells, whose plasma membrane are closely joined together. it allows waves of electrical excitation to pass easily between them. have four chambers,, separated in two sides by a muscle called "septum". impure blood enters the heart from superior and inferior vena cava and leaves the heart from aorta. between different blood vessels entering and leaving the heart are valves, naming tricuspid valve between ra and rv, bicuspid valve between la ad lv, semi lunar valve between rv and pulmonary and the aortic valve between lv and aorta.
differences in the thickness of the walls of the different chambers in terms of their functions:
The right atrium's wall is approximately only 2mm in thickness due to the combined influence of the low pressure of this chamber and the ease of pumping to low pressure areas (right ventricle). The right ventricle's wall thickness for an adult is 4-5 mm as it has to pump the blood to the lungs. The left atrium wall is a little larger than the right atrium at 3mm for it receives the blood from lungs at low pressure. The left ventricle is the largest chamber of the heart, with the thickness of wall from 8 to 15 mm as it has to pump the blood with the greatest pressure to aorta and all over the body.
the mammalian circulatory system as a closed double circulation:
in this type of circulation the blood flows through the heart twice. the pulmonary circulation is separate from the systemic circulation. In this circulation, the heart consists of: the right side that pumps deoxygenated blood into the pulmonary section and the left side that pumps oxygenated blood into the systemic circulation. and it is closed system as the blood remains closed at all times within vessels of different size and wall thickness.
the cardiac cycle:
The cardiac cycle is the sequence of events that occurs when the heart beats. There are two phases of the cardiac cycle. In the diastole phase, the heart ventricles are relaxed and the heart fills with blood. In the systole phase, the ventricles contract and pump blood to the arteries. One cardiac cycle is completed when the heart fills with blood and the blood is pumped out of the heart.download/file.php?mode=view&id=2753
how heart action is initiated and controlled:
Pacemaker cells in the sinoatrial node, located over the right atrium, initiate the cardiac cycle. Systole begins when excitation spreads over both atria, activating atrial contraction. Excitation spreads to the atrioventricular node, near the atrioventricular border, from which excitation is conducted by the bundle of His and the Purkinje system (groups of specialized muscle cells) to the bottom of the ventricles. Excitation spreads upward in the ventricles, contracting them from the bottom up, like squeezing a toothpaste tube from the bottom. When the action potentials end, diastole (relaxation) begins, until excitation is again initiated by the pacemaker cells of the sinoatrial node.
made of cardiac muscle which is formed from interconnecting cells, whose plasma membrane are closely joined together. it allows waves of electrical excitation to pass easily between them. have four chambers,, separated in two sides by a muscle called "septum". impure blood enters the heart from superior and inferior vena cava and leaves the heart from aorta. between different blood vessels entering and leaving the heart are valves, naming tricuspid valve between ra and rv, bicuspid valve between la ad lv, semi lunar valve between rv and pulmonary and the aortic valve between lv and aorta.
differences in the thickness of the walls of the different chambers in terms of their functions:
The right atrium's wall is approximately only 2mm in thickness due to the combined influence of the low pressure of this chamber and the ease of pumping to low pressure areas (right ventricle). The right ventricle's wall thickness for an adult is 4-5 mm as it has to pump the blood to the lungs. The left atrium wall is a little larger than the right atrium at 3mm for it receives the blood from lungs at low pressure. The left ventricle is the largest chamber of the heart, with the thickness of wall from 8 to 15 mm as it has to pump the blood with the greatest pressure to aorta and all over the body.
the mammalian circulatory system as a closed double circulation:
in this type of circulation the blood flows through the heart twice. the pulmonary circulation is separate from the systemic circulation. In this circulation, the heart consists of: the right side that pumps deoxygenated blood into the pulmonary section and the left side that pumps oxygenated blood into the systemic circulation. and it is closed system as the blood remains closed at all times within vessels of different size and wall thickness.
the cardiac cycle:
The cardiac cycle is the sequence of events that occurs when the heart beats. There are two phases of the cardiac cycle. In the diastole phase, the heart ventricles are relaxed and the heart fills with blood. In the systole phase, the ventricles contract and pump blood to the arteries. One cardiac cycle is completed when the heart fills with blood and the blood is pumped out of the heart.download/file.php?mode=view&id=2753
how heart action is initiated and controlled:
Pacemaker cells in the sinoatrial node, located over the right atrium, initiate the cardiac cycle. Systole begins when excitation spreads over both atria, activating atrial contraction. Excitation spreads to the atrioventricular node, near the atrioventricular border, from which excitation is conducted by the bundle of His and the Purkinje system (groups of specialized muscle cells) to the bottom of the ventricles. Excitation spreads upward in the ventricles, contracting them from the bottom up, like squeezing a toothpaste tube from the bottom. When the action potentials end, diastole (relaxation) begins, until excitation is again initiated by the pacemaker cells of the sinoatrial node.
Blood plasma is the liquid component of blood, in which the blood cells are suspended. Plasma is the largest single component of blood, making up about 55% of total blood volume. . Blood plasma contains many vital proteins including fibrinogen, globulins and human serum albumin.
tissue fluid is a solution which bathes and surrounds the cells of multicellular animals.
Lymph originates as blood plasma that leaks from the capillaries of the circulatory system, becoming interstitial fluid, and filling the space between individual cells of tissue.
as stated by @Xthegreat,,,whatever that is not present in the tissue fluid cannot be found in the lymph. plus, EVERYTHING is inside the blood plasma.
have a look at this download/file.php?mode=view&id=2754
tissue fluid is a solution which bathes and surrounds the cells of multicellular animals.
Lymph originates as blood plasma that leaks from the capillaries of the circulatory system, becoming interstitial fluid, and filling the space between individual cells of tissue.
as stated by @Xthegreat,,,whatever that is not present in the tissue fluid cannot be found in the lymph. plus, EVERYTHING is inside the blood plasma.
have a look at this download/file.php?mode=view&id=2754
the exchange mechanism across the capillaries,,,http://www.xtremepapers.me/forums/download/file.php?mode=view&id=2755
this slide show can help understand tissue fluid and lymph, have a look at this,,,http://www.xtremepapers.me/forums/download/file.php?mode=view&id=2756
- Messages
- 28
- Reaction score
- 5
- Points
- 13
thank you 