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ss7ja [257]
3 years ago
12

Pamela watches her cat Mr. Big swat his paw at the wall and calls out, "Crazy Big, what are you swatting at; nothing is there."

How would you explain the fact that Mr. Big can see something that Pamela cannot?
a. Cats see low-frequency, low contrast objects better than humans.

b. Cats see low-frequency, high contrast objects better than humans.

c. Cats see high-frequency, low contrast objects better than humans.

d.ats see high-frequency, high contrast objects better than humans.
Medicine
1 answer:
Advocard [28]3 years ago
8 0

Answer:

a. Cats see low-frequency, low contrast objects better than humans.

Explanation:

Mr. Big is able to see something that Pamela does not see because cats have a wider field view of about 200 degrees while that of humans is about 180 degrees.

Cats eyes have 6-8 times more rod cells, which are more sensitive to low light, than that of humans. Their elliptical eye shape, large tapetum and cornea help to gather light for better vision at night.

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Describe a method of calculating the flow rate in the normal pump versus the pump with the narrowed vessels you described above.
charle [14.2K]

Answer:

Taking into account that:

The flow velocity u of a fluid is a vector field

u = u (x, t)

What gives the velocity of a Fluid Plot at position x y time t.

q = || u ||

Now if the flow is continuous as it happens in the blood vessels then:

The flow of a fluid is said to be constant if it does not move over time, that is why the variant would be 0.

Explanation:

As for the pump with narrow vessels, there the area would be less, therefore the flow also and the flow velocity as well. Adding that the friction with the walls increases as it is narrower, thus generating an increase in pressure with the flow of the liquid.

So this is where we have to put emphasis on the biophysics branch that explains the following:

The Venturi effect is explained by the Bernoulli Principle and the principle of continuity of mass. If the flow rate of a fluid is constant but the section decreases, the speed necessarily increases after crossing this section. By the theorem of conservation of mechanical energy, if the kinetic energy increases, the energy determined by the value of pressure necessarily decreases.

Indeed, according to Bernoulli's principle:

P 1 + 21 ρv 12 + ρgh 1 = P 2 + 21 ρv 22 + ρgh 2

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3 0
3 years ago
Is Kim Jong un dead? if not, what will happen to his surgeon after Kim's failed heart surgery?
mr Goodwill [35]
He’s not dead , he vanished over coronavirus concerns, not heart surgery :)
4 0
3 years ago
Read 2 more answers
The skeletal system plays no role in regulating the mineral balance within the bloodstream.
ser-zykov [4K]

Answer:

false

Explanation:

6 0
3 years ago
test bank 1) The scientific study of joints is called a) anthropology. b) archeology. c) arthrology. d) orthoscopy. e) rheumatol
jarptica [38.1K]

Answer:

Please see the answers below in bold type.

Explanation:

1. The scientific study of joints is called arthrology. From the Greek <em>Arthron</em>, joint or articulation. This science studies the anatomy and the function as well as the diseases and treatments associated with joints, such as arthritis.

2. The structural classification of joints divides all joints into three types: cartilaginous, synovial and fibrous. This depends on what tissue the joint is constituted by and on the presence or not of a cavity on one bone where the other one fits. In this case, the only exception is synarthrosis, which is one of the three types of joint (synarthrosis, diarthrosis and amphiarthrosis) in the functional classification of joints.

3. Slightly movable joints are classified as amphiarthrosis. This slight movement is the result of hyaline cartilage that connects the bones. An example is the ribs that are connected to the sternum. The cartilage allows the rib cage to move slightly, for example it expands somewhat when you inhale as you breathe.

4. A synarthrosis, from the Greek <em>syn</em> = together or joined, and <em>arthron</em> a joint, meaning a fused or immobile joint. The only immobile joint listed here is the gomphosis, as the skull suture in infants has cartilage which allows for some movement. A gomphosis is a peg-and-socket joint, and the only example is the tooth. The root of the tooth is the peg which is inserted into its socket.

8 0
3 years ago
Which two sensory nerves or cells are primarily stimulated by chemoreceptors?
Diano4ka-milaya [45]

Answer:

B

External Chemoreceptors are associated with taste and smell.  These senses are controlled by your olfactory and gustatory nerves.

3 0
3 years ago
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