Normal No Spacing Heading 1 Headi nd improvements, choose Check for Updates. 3.

Question

Normal No Spacing Heading 1 Headi nd improvements, choose Check for Updates. 3. The strongest muscle contractions are normally achieved by a increasing stimulus above the threshold b. increasing stimulus above the trepne,stimulus c. increasing the stimulation up to the maximal stimulus d. recruiting small and medium muscle fibers 4. Which of the following is required for excitation-contraction coupling? a, Ca2+ only b, Ca2+ and ATP c.ATP only d, ATP and glucose 5. Intramuscular injection?the best method to deliver a large amount of medicine that have to be deliver over a long period of time. Is this statement true or false? a. True b. False 6. Which muscle is tightened and shortened in a child with Congenital Muscular Torticollis? a. Scales b. Trapezius e. Splenius capitis d. Sternocleidomastoid 23. During the depolarizing phase of the action potential a. sodium gates close and potassium gates open c. sodium gates open and potassium gates close b. both gates close d. both gates open 24-The phase in which all gated sodium and potassium channel closed is called a depolarizing phase b. repolarizing phasec. resting state hyperpolarization 25. This neurotransmitter is active in the CNS and PNS, and stimulates skeletal muscle and inhibits cardiac muscle. a. Norepinephrine Glutamate b. Acetylcholine c. Dopamine d. 26. Which neurotransmitter produces inhibitory activity in the brain and has an important role in cognition, motivation, behavior and mood? a. Norepinephrine b. Dopamine c. Serotonin d. 27. This is the most common neurotransmitter in the brain excites activity in the in nervous system to promote cognitive functioning in the brain. a. Glutamate Epinephrine b. GABA d. Serotonin 28. The following neuropeptides assist our bodies to respond to pain stimuli except: a. Encephalin b. Substance P c. Beta-endorphin d. Serotonin

Explanation / Answer

3. The strongest muscle contractions are normally achieved by increasing the stimululation to maximal stimulus. Option C

4. Ca2+ and ATP are required for excitation-contraction coupling. Option B

5. Yes, intramuscular injections are best way to provide long term medicines. ---------- TRUE

6. Sternocleiomastoid muscle is tightned and shortened in Congenital muscular torticollis. Option D

23. Both sodium and potassium channels are open during depolarization. Option D

24. At resting phase all the gated Na+ and K+ channels are closed. Option C

25. Acytylcholine is active in CNS and PNS which stimulates skeletol muscle and inhibit cardiac muscle. Option B

26.Serotonin has inhibitory effect on brain which is involved with cognition, mood , behaviour, motivation. Option C

27. Glutamate is the most common nurotransmitter in brain which is excitatory in nervous system to promote cognitive functioning. Option A

28. Substance P is neuropeptide that assist our bodies to respond to pain stimuli. Option B

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