Bio 256 Exam 3 Questions and Answers
which of these is NOT a complication of aplastic anemia - Answer-hypertension
which of the following is likely during vigorous exercise - Answer-capillaries of the active muscles will be engorged with blood
the velocity of blood flow - Answer-is slowe...
Bio 256 Exam 3 Questions and Answers
Oxygen is transported by red blood cells it is carried by - Answer-chemically combined with a heme group
which of the following might trigger erythropoiesis? - Answer-hypoxia of EPO- producing
cells
which takes the longest time in a contracting skeletal myofiber ? - Answer-recovery
if acetylcholine is applied to the heart, but cardiac output is to remain constant, which of the following would have to happen? - Answer-stroke volume must increase
the myocardium requires ___ oxygen than skeletal muscle and has ___ mitochondria - Answer-more, more
freds blood was determined by AB positive. What does this mean? - Answer-There are no antibodies to A to B or to Rn antigens in the plasma
acute leukemia is more common in ___ persons; chronic leukemia is more common in ___ persons - Answer-younger, older
which will increase blood pressure? - Answer-adrenal medulla hormones, ADH hormone, angiostensis II, endothelium derived factors
which of the following is a regulatory function of blood? - Answer-maintenance of normal
pH in body tissues
an increase in venous return most directly affects - Answer-stroke volume
In an isotonic contraction, the muscle ________. - Answer-changes in length and moves the "load"
the neurotransmitter used at a motor end plate - Answer-acetylcholine
if plasma proteins are lost due to kidney disease, then which of the following pressure changes occur as a result? - Answer-blood colloid osmotic pressure decreases
the normal lymphocyte percentage of white blood cells is - Answer-about 25%
heart sounds other than those caused by closing of valves are called - Answer-murmurs
the most abundant plasma protein is - Answer-albumin
which of these is NOT a normal plasma protein - Answer-hemoglobin which of these is NOT a complication of aplastic anemia - Answer-hypertension
which of the following is likely during vigorous exercise - Answer-capillaries of the active
muscles will be engorged with blood
the velocity of blood flow - Answer-is slowest in the capillaries because the total cross sectional area is the greatest
which of the following factors does NOT influence heart rate? - Answer-skin color
a motor neuron and the myofibers it innervates is known as a - Answer-motor unit
which statement is true about an EKG - Answer-the t wave indicates ventricular depolarization
the molecule binding calcium in smooth muscle cells - Answer-calmodium
glucose delivered to a recovering myofiber is used to - Answer-reestablish glycogen stores
angina pectoris is - Answer-pain accompanying myocardial ischemia
rigor mortis occurs because - Answer-ATP required to detach myosin from actin molecules is depleted
Which returns fluid escaping from the circulatory system to the circulatory system? - Answer-lymphatic vesels
what ion is responsible for the depolarization of cardiac autorythmic cells during an action potential - Answer-calcium
Where is the pacemaker of the heart located? - Answer-right atrium
during a normal cardiac cycle, the atria contract when they are directly stimulated by the
- Answer-sinoatrial node
When old red blood cells are worn out, their components are recycled. The globin from the hemoglobin is - Answer-metabolized as amino acids
___ binds Ca++, exposing ___ binding sites on ___. - Answer-troponin, myosin, actin
The stimulus for atrial contraction originates at the ___, while the stimulus for ventricular
contraction originates at the ___. - Answer-sinoatrial node, atrioventricular node
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller biggdreamer. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.
