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Biology Unit 1
Heart, Viens, Artries, Blood
Question | Answer |
---|---|
How can you tell side of the heart is the ventral surface? | Because the artries and veins are come up through the top and the ... |
How many chambers does a mammalian heart have? Name an example. | 4 chambers, Bird. |
Blood from the lungs enters the heart through the? a)Right Atrium b)Right ventricle c)Left atrium d) Left Ventricle | c |
The protective sac in which the heart is enclosed is the a) septum b)pericardium c)Lymphatics d) Clavicle | b |
Carbon dioxide and waste products diffuse form the tissures into the blood through the a) capillaries b)arterioles c)venules d)Lymph Vessels | a |
the inner layer of a vein is made of? | Epithelial Tissue |
The heart rate is increased by? | The sympathetic nervous system |
Unlike all other artries, the pulmonary artery... | Carries oxygen-poor blood |
Valves are present in? | Lymph vessels, veins and heart |
Blood is carried to the tissues of the heart by | Coronary Artery |
The fluid that leaks in the tissues from the blood is | lymph |
55% of your blood is made of | Plasma |
Blood Pressure is regulated by special sensory neurons and by the | kindeys |
What does the superior Vena Cava do? | Largest vein in the body, take blood to the heart |
Where does the blood flow from when it reaches the Right atrium | Superior Vena Cava |
Muscle tissuse that contracts without nerve excitation | Mygentic |
Define Mygentic | Muscle tissues that contracts without nerve excitation |
Large pumping chamber of the heart is ? | Ventricles |
Arteries do what? | Carry blood away from the heart and to the rest of the body |
Accumlation of fat deposits in the artries | Atheroscelosis |
What is Artheroscelosis? | Accumlation for fat and plaque in the artries |
Narrowing of Blood vessels | vasoconstriction |
what is Vasoconstriction? | Narrowing of blood vessels |
Blood in the pulmonary artery | deoxygenatic |
Disorder caused by a faulty heart value | Mermer |
Thin walled chamber of the heart is? | atrium |
System that carries blood to the lungs | pulmonary system |
bulge in the wall of the heart is | anuriusm |
What is an anuriusm | A bulge in the wall of the heart |
Blood vessels in which diffusion occurs | Capillaries |
Widening of the blood vessels | vasodilation |
What is Vasodilation? | Widening of the blood vessels |
What arteries supply the heart | Corenary arteries |