In: Anatomy and Physiology
2.Sound, light, taste, touch and smell do not come in one level. We are able to describe the intensity of a stimulus (i.e. the intensity of ammonia salts or the brightness of a camera’s flash). What are the mechanisms used by the nervous system to communicate intensity via graded and action potentials?
In: Anatomy and Physiology
How does hormonal control of glomerular flow rate affect cardiac output?
In: Anatomy and Physiology
Visit the following links, associated with the television show Monsters Inside Me, and then complete the assignment below. Adopt the first three parasites from the Parasite Pet Shop by putting the stages of their life cycle in order. First review the Meet the Parasite link and then watch the video clips. This will help you understand, and correctly complete, the life cycle of each parasite. You can also find these links on the Meet the Microbes: Eukaryotes Lecture Main Page. Ctrl+click to follow the links below.
Video Clips “Pork Tape Worm” & “Pork Tape Worm In Brain”
In: Anatomy and Physiology
1. Which of these answers are correct
The first heart sound, "lubb," is caused by the ________.
closing of the atrioventricular valves |
closing of the semilunar valves |
regurgitation of the atrioventricular valves |
blood flowing into the ventricles |
2. Choose the right answer:
The plateau phase of the ventricular action potential is caused by _______.
slow K+ channels opening |
fast Na+ channels opening |
fast voltage-gated Ca2+ channels opening |
slow voltage-gated Ca2+ channels opening |
3.. How is heart rate controlled?
Parasympathetic and sympathetic divisions of the ANS control heart rate. |
Heart rate is controlled through the cardiac plexus. |
Dual innervation controls the heart rate. |
All the listed answers are correct. |
In: Anatomy and Physiology
Which level consists of related organs that work to achieve a common function?
A.Organ Level
B.cellular level
C.chemical level
D.Tissue level
E. Organ system level
In: Anatomy and Physiology
For dental radiographer communications,
Give three examples of things you can say (either verbal or
non-verbal) to a patient to make them more comfortable. Also, give
three examples of how you would handle a patient with special needs
to initiate cooperation during the exposure process.
.
Give three examples of things you can say (either
verbal or non-verbal) to a patient to make them more comfortable.
Also, give three examples of how you would handle a patient with
special needs to initiate cooperation during the exposure
process.
In: Anatomy and Physiology
Diffusion of nutrients across a cell membrane can be called a form of
Multiple Choice
passive transport.
active transport.
exocytosis.
osmosis.
bulk transpor
In: Anatomy and Physiology
In: Anatomy and Physiology
In: Anatomy and Physiology
A patient with left hemisphere dominance underwent a complete cerebral commissurotomy. During a study the patient was fitted with special contact lenses so that light would only be seen from the left visual field. The patient was briefly shown a picture of a watermelon. The patient was then asked what they saw in the picture. Finally, the patient was shown several objects including a watermelon and other fruit and was prompted to point to the object they saw previously in the picture. How will the patient respond on these tasks?
Group of answer choices
They will be able to describe what they saw but they will not be able to accurately point with their dominant hand
They will be able to describe what they saw but they will not be able to accurately point with their nondominant hand
They will not be able to describe what they saw but they will be able to accurately point with their dominant hand
They will not be able to describe what they saw but they will be able to accurately point with their nondominant hand
In: Anatomy and Physiology
A patient with basel cell carionma has palisade patterning in his biopsy. What would be the normal patterning if the cell didn't have BCC?
In: Anatomy and Physiology
What is the function of coronary circulation (also known as the coronary circuit)?
In: Anatomy and Physiology
Is the following the correct order of steps leading to muscle contraction? (Yes or No)
If you think the order is incorrect, then what would be the correct order?
a. secretion of acetylcholine by the motor neuron
b. attachment of acetylcholine to receptors on the motor end plate of the sarcolemma
c. opening of sodium channels in the sarcolemma
d. depolarization of the sarcolemma
e. action potential reaching the sarcoplasmic reticulum
f. release of calcium ions by the sarcoplasmic reticulum
g. binding of calcium ions to troponin on the thin filament
h. binding of myosin to actin (formation of cross bridges)
i. power stroke
In: Anatomy and Physiology
Which of the following does not occur when a sarcomere contracts?
a. the thin filaments are pulled toward the center of the sarcomere
b. the lengths of the thin and thick filaments are unchanged
c. the thin and thick filaments increasingly overlap
d. the distance between the ends of the sarcomeres (Z discs) increases
e. the width of the A band is unchanged
f. the H zone and I band become narrower
_________________________________________________________________________________
Which of the following would not help a muscle cell to relax?
a. breakdown of acetylcholine by acetylcholinesterase
b. pumping calcium ions from the sarcoplasm into the sarcoplasmic reticulum
c. covering or blocking the myosin-binding sites
d. increasing the flow of sodium ions from the outside (interstitial fluid) to the inside of
the sarcolemma
e. repolarization of the sarcolemma
In: Anatomy and Physiology