Muscles: Key Concepts

Moving your jaw forward, causing an underbite, is specifically called what type of movement?

Rigor mortis, the stiffening of muscles after death, occurs due to what primary biochemical change?

Which protein is primarily responsible for binding and storing oxygen within muscle cells?

What are the basic, repeating contractile units that make up skeletal muscle?

Sarcomeres, the functional units responsible for muscle contraction, are found in what type of muscle?

What is the primary function of T tubules in muscle cells?

During intense anaerobic exercise, if insufficient oxygen is available, pyruvic acid is converted to what substance?

The period during which a muscle is temporarily unable to respond to stimuli is known as what?

The extensor hallucis longus muscle is responsible to extend which toe?

What class of lever is demonstrated when flexing the forearm using the biceps brachii muscle?

What is a key muscle involved in preventing foot drop?

The effectiveness of a lever system depends primarily on what factor?

Which of the following muscles is NOT directly associated with breathing?

What is the primary determinant of the power of a muscle?

What term describes a muscle primarily responsible for producing a specific movement?

Which type of ion channel opens in response to a change in the electrical potential across the cell membrane?

What would be the consequence of a loss of function in the enzyme acetylcholinesterase?

Which of the following is not a function of the autonomic nervous system?

Collections of neuron cell bodies located outside the central nervous system are called what?

The central nervous system includes what?

What is the name given to a neuron whose primary function is connecting other neurons?

Saltatory conduction, which greatly increases the speed of nerve impulse transmission, is made possible by what structure?

Which brain area plays a key role in regulating wakefulness and alertness of the cerebral cortex?

Which of the following would NOT be expected in normal cerebrospinal fluid?

What physiological event is characteristic of REM sleep?

Which of these is NOT a primary function of cerebrospinal fluid?

Damage to the hypothalamus may result in all of the following EXCEPT:

Which nuclei receive impulses from the inner ear's equilibrium apparatus and help maintain balance?

Which area of the brain is least involved in memory?

Inborn or intrinsic reflexes possess which characteristic?

Striking the "funny bone" results in stimulation to which nerve?

What type of reflex causes muscle relaxation and lengthening in response to increased muscle tension to avoid damage?

Which type of receptor responds to stimuli from within the body, such as changes in blood pressure or internal organ conditions?

What type of nerves conduct impulses only toward the central nervous system (CNS)?

Following axonal injury in peripheral nerves, what cells guide the regeneration process?

How does regeneration typically occur within the central nervous system (CNS)?

In a crossed-extensor reflex, if one arm is grabbed and flexes in response, what will the opposite arm typically do?

Which of the following physiological responses is NOT associated with parasympathetic stimulation?

Which of the following statements about the sympathetic and parasympathetic nervous systems is FALSE?