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Which one of the following describes the matching terms with the most efficient long-term source of ATP and the type of muscle fibers that are engaged in marathons?

The opening of the uterus is referred to as the _________________.

In order for a muscle contraction to occur, cross-bridges must form between which one of the following structures within a myofibril?

Which one of the following statements is TRUE regarding bone? Select All that apply.

Reason whether or not the following graded potentials that are happening almost at the same time can generate the action potentials (APs) in the neuron. (The resting potential is -70mV, and the threshold is -55mV.) Calculate the net potential to evaluate if it exceeds the threshold to generate APs.  1) +10 mV graded potential 2) -15 mV graded potential 3) +25 mV graded potential

Which of the following is required to detach myosin from actin?

Tina was helping her grandmother cook dinner. The savory aroma of garlic and onions filled the warm kitchen. As she reached out to adjust the pot on the stove, her fingers touched the hot metal lid—sizzling, blistering heat surged through her skin. Instantly, [sensory] neurons in her fingertips detected the dangerous temperature and fired off electrical signals. These signals raced through her peripheral nerves to her [spinal-cord]. There, the message was relayed by [interneuron], the messengers in the spinal cord. Without even waiting for the brain to process the pain, the interneurons sent an urgent command to her arm muscles through the [motor] neurons. In a reflexive flash, Tina’s hand jerked back. She gasped, cradling her stinging fingers, the scent of cooked onions still lingering as her brain finally caught up: “That was hot!”

1) Tamar, a 78-year-old lady, presented with the symptoms of aphasia (trouble in communication) and social withdrawal due to long-term memory loss.  Which one of the following brain regions (A to E) is associated with these findings? Write the corresponding letter to indicate the region. [D] 2) Identify the structure (A to E) where incoming stimuli can be ‘triaged’ to other regions of the cerebrum so that your brain won’t be overwhelmed all the time. [B]    

Select the incorrect statement related to sarcomere structure and function.

Using the figure above and write down with a corresponding alphabet for 1) to 3). 1) Identify the structure that is the unit of contraction. [C] 2) Identify the structure that involves troponin and tropomyosin proteins. [D] 3) Identify the structure that has heads to attach to the thin filament. [B] 4) Write the name of the ions that are required to form a cross-bridge formation between the two filaments. [calcium]