Which of the following statements about fleas is the MOST accurate?

During a neuromuscular lab experiment, a subject’s biceps brachii muscle is stimulated electrically at increasing frequencies. Initially, isolated twitches are observed. As the frequency increases, the twitches begin to summate, and partial relaxation between contractions becomes shorter. Eventually, the electrical stimuli become so rapid that no relaxation is observed at all between contractions. The muscle enters a state of sustained contraction with no visible fluctuation in force output.   Question: Which of the following best describes the muscle contraction observed when no relaxation occurs between stimuli and the muscle remains in a continuous, forceful contraction?  

Give the scientific and common name for this parasite. Patient is a feline.

Mature heartworms are found in the __ and __ of a dog’s heart.

Which of the following best describes the host that harbors the larval, juvenile, immature, or asexual stages of the parasite? The parasite must move to a different host to continue development.

Which of the following protozoans is considered to be amorphous? (Having no definite shape)

Mature heartworms are found in the __ and __ of a dog’s heart.

Show that the acceleration of any object down a frictionless incline that makes an angle  with the horizontal is a = g sin

Which of the following statements about fleas is the MOST accurate?

A patient experiences acute stress, triggering the release of epinephrine. Which of the following combinations of physiological effects is most directly associated with epinephrine’s role during the “fight or flight” response?