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Bio 20B Lecture 6, Chapter 50, Circ System Continued
Terms in this set (35)
larger 4 4 1 1
Hemoglobin is _______(larger/smaller) than Myoglobin. It has _____ heme group(s) that can bind _______(#) molecular oxygen(s) (02), while Myoglobin has ______(#) heme group(s) and can bind _______(#) molecular oxygen(s).
How many chambers do the following creatures have in their hearts? (answer in 1 string of numbers from top to bottom, ie 1234567)
2 separate 2 shunt connects 2
Crocodilian hearts have ______ (#) ________(connected/separate) ventricles, ________(#) atria, and also sport a ______, which (connects/separates) the ____(#) efferent aorta.
true (uses a shunt to connect the efferent aorta and allow the crocodilian to control the blood flow in this fashion.)
The crocodilian heart is specialized to allow variation in the proportion of blood that goes to the systemic and pulmonary circuits (true/false)
3 2 1
Reptiles have a ____(#) chambered heart: _____ (#) atria, ______(#) ventricle(s)
2 2 incomplete
The reptillian heart has ____(#) atria, _____(#) ventricle(s), and a ________(complete/incomplete) septum
2 1 1
Fish have _____ chambers in their hearts: ____(#) atria and _____(#) ventricle(s)
4 2 1 1
The lungfish ____(#) chambered heart contains the following: ___ Atria, ___ Ventricle(s), and ___ Lung(s).
The Lungfish's lung is derived from the _____.
ectotherms less decreases
Reptiles are (ectotherms/endotherms). When temperatures are LOW, they need (more/less) oxygen because their metabolic rate (increases/decreases).
left lower systemic
When reptiles are NOT breathing, the resistance to the (left/right) aorta will be (lower/higher), and the blood goes to the (pulmonary/systemic) circuit.
When reptiles ARE breathing, blood goes to the ________(pulmonary/systemic) artery
Crocodiles cannot control the amount of blood going to system circuit and pulmonary circuit very well (true/false)
In human hearts, the RIGHT side goes to the (body/lungs) and the LEFT side goes to the (body/lungs).
superior vena cava inferior vena cava
Heart from the head enters the heart thru the ___________. Head from the rest of the body enters thru the __________.
false (both pump the same volume)
The right ventricle pumps more volume than the left ventricle (true/false)
higher (Has a thicker wall)
The left ventricle overcomes (higher/lower) resistance than the right ventricle
The two sides of the heart contract _______.
(a) Left side first, followed by right
(b) Right side first, followed by left
(c) Thrice per cycle
(d) At the same time
In the _______ phase, the ventricles contract
In the ______ phase, the ventricles relax.
_______ cells in the heart can initate AP without nerve cells
RBCs are _______(shape)
Which of the following is false: (a)RBCs have a nucleus, (b) RBCs are round, (c) RBCs are biconcave, (d)RBCs are flexible, (e) RBCs come from stem cells
RBCs can last for about a third of a year (true/false)
kidney (also liver)
Erythropoietin is released by______(organ) in response to insufficient O2
Erythropoietin is a hormone (true/false)
RBCs are created when this hormone is released
______ is a term referring to the lack of oxygen in the tissues
Hypoxia-inducible factor-1 (signals tissues in the kidneys to send out more Erythropoietin)
Tissues express this activating transcription factor in response to oxygen stress
In the bone marrow, __________(type of cell) release _______(), which are responsible for clotting
Write all that are correct:
(a) are merely fragments of cells
(b) carry hemoglobin
(c) lack organelles
(d) contain a nucleus
(e) directly come from stem cells
platelets collagen contacts fibrin
______(clotting cells) are activated by the exposure of _______, which happens when there is a rip or tear in a blood vessel. The blood vessel ______(contracts/expands) and forms a plug called _______.
prothrombin thrombrin fibrinogen fibrin (prothrombin and fibrinogen are zymogens)
To form a clot, platelets cleave _______(enzyme) and change it to its active form, which is called _______. This signals a protein called _______, which is cleaved in to _______. Finally, the plug is formed.
zymogen trypsinogen trypsin protein
An inactive enzyme is called a ________.
An example found in out gut is called ______. The active form of this is called ______ and digests ________(type of substance).
Of the 4 proteins involved with the clotting cascade, these 2 are zymogens.
THIS SET IS OFTEN IN FOLDERS WITH...
Bio20B - Chapter 40
Bio20B - Chapter 44
Bio20B - Chapter 49
Bio20B - Chapter 51
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