Author: Anonymous

Imagine this scenario: you’re attempting to prepare for your A&P final exam in a bustling cafeteria, where music and conversations constantly surround you. How can you possibly concentrate on your studying in such a distracting environment? Select or circle the spot where all the sensory information is triaged and relayed before being reported to cerebral cortex. 

There are neurons in this picture. Not all neurons are fully present, and some neurons may have partial structures of them.  Write the number of neurons you can recognize in this picture.

Which statements describe the image correctly?Select ALL that apply.

Based on the molecule’s chemical properties, decide how each moves across the plasma membrane.

During the cup dance, you suddenly feel tingling and numbness in the posterior right brachium.  You suspect that you might have some nerve damage in the nerve, which innervates the muscle brachii to extend the elbow joint.

Bone tissue is a specialized type of connective tissue composed of cells and an extracellular matrix (ECM, aka gels + fibers). An excessive production of organic components in bone tissue can lead to rickets in children, resulting in soft and weakened bones. Conversely, an overproduction of inorganic components can make bones brittle and more prone to fractures. Group the following items into either organic vs. inorganic parts of ECM to understand these abnormal symptoms.

How do the cells in the epidermis obtain oxygen without direct blood supplies there?  What is the term to describe a material transport that moves from higher to lower concentration? Therefore the epidermal basal cells get oxygen in the avascular epidermis along the concentration gradient without any facilitators. This mechanism is specifically called .

Match each description of a protein function to its corresponding letter in the picture. 

  means maintaining constant internal body condition in response to a rapidly changing environment. This kind of feedback moves the abnormal factors in the direction of reducing changes as time goes on. This mechanism is called feedback which is most common in our body. 

It is important to understand molecular polarity to predict how molecules move in the body. Polar (mostly hydrophilic with asymmetrical structure) molecules, regardless of their size, generally require protein transporters to cross the cell membrane.  In contrast, nonpolar (mostly hydrophobic with symmetrical structure) molecules can typically diffuse through the membrane without “helpers”. Categorize the following molecules into Polar vs. Non-Polar.