Muscle System: Question Preview (ID: 32764)


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What is the sodium potassium exchange rate of the sodium potassium pump?
a) b) 1:2 one potassium for every 2 sodium's c) 2:3 2 sodium's for every 3 potassium's d) 3:2 3 sodium's for every 2 potassiums
When the hand moves away from the body what type of movement is that?
a) adduction b) abduction c) flexion d) extension
How does botulism kill someone?
a) b) it is an inherited disorder that causes the muscles to weaken over time c) it makes muscles contract too much and if the diaphragm does not contract it affects breathing d) it prevents muscle contraction and if the diaphragm does not contract it affects breathing
What causes cerebral palsy?
a) it is a viral infection affecting the muscular system b) it is an inherited disorder that causes the muscles to weaken over time c) lack of oxygen in fetal devlopment or during birth d)
Once acetylcholine binds what channel opens?
a) sodium b) potassium c) calcium d) chloride
When sodium channels open on the muscle cell membrane what happens?
a) b) a c) an action potential travels down the t-tubules. This is the beginning step of contraction d)
What are the two layers of smooth muscle?
a) circular and longitudinal b) cuboidal and columnar c) squamous and cuboidal d)
How does creatine help muscles
a) creatine combines with ADP to make ATP b) creatine has its own ATP which gives the muscle cells energy c) creatine carries a phosphate and drops off its extra phosphate making more ATP d)
What makes cardiac muscle so special?
a) It has anchoring junctions b) In between the cells it has gap junctions that allow ions to pass freely from cell to cell. c) It is mononucleated d)
proteins, carbs and fats can all be broken down into smaller molecules to make energy. All the smaller molecules go into what cycle to make energy?
a) Calvin Cycle b) motorcycle c) Kreb's/Citric Acid cycle d) bicycle
When the angle at the joint decreases what kind of movement is that?
a) adduction b) abduction c) flexion d) extension
What is the purpose of the sodium potassium pump
a) To pump out sodium and pump out potassium b) To pump in sodium and potassium c) potassium are constantly leaking out and sodiums are constantly leaking in. The pump brings it back to balance d) potassium are constantly leaking in and sodiums are constantly leaking out. The pump brings it back to balance
What ion binds to troponin that allows actin and myosin to join for muscle contraction?
a) calcium b) sodium c) potassium d) chloride
What is the neurotransmitter that stimulates muscle contraction
a) calcium b) sodium c) acetone d) acetylcholine or AcH
What causes glycogenolysis?
a) muscular exercise b) jogging c) jumping d) skipping
What is a concentric movement
a) muscle shortens, therefore muscle force is greaterc than resistance b) muscle elongates, therefore muscle force is less than resistance c) muscle contracts but does not elongate or shorten d)
Both glucagon and insulin go to what organ?
a) kidneys b) liver c) spleen d) lungs
What is glycogenesis
a) when glycogen is made using ATP b) formation of glucose from glycogen when their is too much glycogen in the body c) formation of glycogen from glucose when their is too much glucose in the body d)
When blood sugar is too high what happens?
a) Pancreas releases insulin. Insulin makes tissues take up glucose from the blood b) Pancreas releases glucagon. Glucagon makes tissues take up glucose from the blood c) d)
When lactic acid builds up where does it go and what happens to it?
a) lactic acid goes to the liver where it gets converted back into glucose b) lactic acid goes to the spleen where it gets converted back into glucose c) lactic acid goes to the lungs where with the help of oxygen it gets converted back into glucose d)
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