Blog

The following steps of muscle contraction are listed but are NOT in the correct order. A. Calcium ions are released from the sarcoplasmic reticulum B. Acetylcholine is released into synaptic cleft C. Impulse travels along sarcolemma of a muscle cell and down T tubules D. Tropomyosin slides over to expose binding sites on the thin filaments E. Sarcomere shortens and the muscle contracts AB. Nerve impulse travels down the motor neuron and reaches synaptic terminal AC. Calcium binds to troponin AD. Acetylcholine attaches to receptors on the sarcolemma AE. Cross bridges form between actin and myosin Which of the above steps occurs second?  

The hormone that plays a pivotal role in setting the basal metabolic rate (and thus body temperature) is  

Taste buds are located in projections on the tongue called       

Poorly managed diabetes can adversely affect which organ(s)? Select all correct answers.  

Arterial receptors detecting high blood pressure followed by lowering of heart rate is an example of          

Which of the following triggers the release of acetylcholine into the synaptic cleft?  

The opening in the iris through which light passes is the        

Light refraction takes place at the  

If the eyeball is too short,visual images would be projected  

Tissue Plasminogen Activator (tPA) is contraindicated with which of the following scenarios?