The majority of internal homeostatic control mechanisms such as calcium homeostasis or glucose homeostasis are generally run by __________________ feedback loop.

Using the letter choices in the figure above, match each labeled organ of the urinary system with its description.  1. Location of nephrons, which filter blood to remove wastes and retain essential solutes. 2. Muscular tube that passes urine out of the body. 3. Stores urine until it is excreted out of the body. 4. Delivers urine to the bladder.

The muscular system is critical in our body’s temperature control, or thermoregulation. When a human body is exposed to a cold environment, our muscular system generates ________________ by shivering to raise the core body temperature to maintain homeostasis.

    Using the letters in the figure above, match each labeled region of the nephron with its description.  1. Fine-tuning and last regulation of solutes happen here 2. Filters plasma from the glomerulus (pick two) and 3. Passes urine to the ureter (pick two). and 4. Where the tubule is permeable to water, not to sodium. 5. Where most major nutrients, like glucose, are reabsorbed.    

Contraction of a skeletal muscle cell is initiated by the:

A patient is transported to your hospital for blood transfusions after a car accident. If his blood type is O then what type(s) of blood can be used to save his life? Select all that apply.

What steps are necessary in order to effectively improve processes?

The most abundant plasma proteins are called ________. They primarily serve to maintain the osmotic balance between blood and interstitial fluid.

Like other endocrine glands, the endocrine tissue of the pancreas is controlled by the pituitary gland.

In our ear, we can find the following structures.  Which one is NOT true about ear anatomy and physiology?