1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kozerog [31]
3 years ago
8

Explain why many vertebrates, including cows and domestic dogs and cats, have much better night vision than humans.

Medicine
1 answer:
rodikova [14]3 years ago
4 0

Answer:

The answer to this question has several factors, but probably the most important lies in the difference in eye structure and size of the different structures of the eyes, especially those specific for light detection and perception, and also, due to the difference in the amount of two types of cells in the eye, the Rods, and the Cones, which are responsible for light reception and color reception.

Most animals, especially nocturnal animals, or those who also have the ability to see at night and day, like cats, or dogs, have several factors that make them better at night vision than humans. The first factor is the structure of their eyes, and the organs that play a role in light perception. These structures are better developed, of bigger size, and capable of extracting light  out of the lowest light densities, whereas the human eye is incapable of that, which is why human eyesight at night is poor. A second really important factor is the difference in the availability of one of the two types of eye cells, which are responsible for light and color perception: the Rods and the Cones. In these animals with nocturnal capability, the Rods are the most common, and thus, they can perceive more light, even when there is very little of it, from the environment. This is also why these animals cannot see in color at night, because they have less Cones, and more Rods.

Finally, there is also a small membrane in the eyes of certain animals, especially nocturnal onces, called the tapetum lucidum, which allows reflection of the light, and even further capturing of it.

These are all reasons why certain vertebrates are much better at night vision than humans.

You might be interested in
Food service workers should always wash their hands after using the restroom to help prevent __________ transmission of foodborn
Liula [17]

The washing of hands of food workers after using the toilet helps prevent feacal oral transmission of foodborne diseases.

<h3>Meaning of fecal oral transmission of diseases.</h3>

Fecal oral is a process of disease transmission through the feaces of an infected food worker to a non infected individual or customer.

This transmission occurs when food workers fail to sanitize properly after using the rest room

In conclusion poor sanitation is dangerous and we all must learn to wash our hands after using the toilet.

Learn more about Disease transmission : brainly.com/question/9286629

#SPJ1

4 0
2 years ago
A nurse is performing an otoscopic examination on a client. Which finding would the nurse document as abnormal
Lemur [1.5K]

the abnormalities the nurse can document during the otoscopic examination are immobility of the tympanic membrane and middle ear effusion.

<h3>What is otoscopy?</h3>

Otoscopy can be defined as a clinical procedure used in the examination of the structures of the ear, particularly the external auditory canal, tympanic membrane, and even the  middle ear.

Clinicians carryout otoscopy during routine wellness physical exams and the evaluation of specific ear complaints

During  the otoscopic examination, the clinician utilizes an otoscope, also to see through or  to visualize the ear anatomy.

The abnormalities that can be documented include;

  • Immobility of the tympanic membrane moves in response to pressure.
  • The detection of middle ear effusion

Thus, the abnormalities the nurse can document during the otoscopic examination are immobility of the tympanic membrane and middle ear effusion.

Learn more about the ear here:

brainly.com/question/8808373

#SPJ1

8 0
2 years ago
How do you identify a medical emergency?
lozanna [386]

Answer:

B

Explanation:

Ok

4 0
3 years ago
Read 2 more answers
What is the suffix of denia in medical terms ?
Romashka [77]
Denia in medical terms means: Pain, the feeling of pain

Hope that helped!
7 0
3 years ago
which hep poses the greatest risk to workers because it is more common and more easily transmitted than other bloodborne disease
Brut [27]

The workers have the great risk to  Human immunodeficiency virus (HIV), hepatitis B virus (HBV), and hepatitis C virus (HCV) are three of the most common bloodborne pathogens.

<h3>What is a Bloodborne Pathogen? </h3>

The infectious microorganism which stay a longer period in blood and cause disease in humans are called bloodborne pathogens.

These pathogens are hepatitis B (HBV), hepatitis C (HCV) and human immunodeficiency virus (HIV).

The sources of infection include Needlesticks and other sharps-related injuries leads bloodborne pathogens

Hepatitis B virus (HBV) and hepatitis C virus (HCV) viruses causes infections and liver damage.

HIV (human immunodeficiency virus) virus causes HIV/AIDS.

For more details regarding blood borne pathogen, here

brainly.com/question/5470408

#SPJ1

4 0
2 years ago
Other questions:
  • Was the physician who helped Janet when she had a seizure correct in asking the hospital administrator to dismiss (fire) her?
    12·1 answer
  • Which statement best describes the role of a nutritionist in diabetic care?
    13·1 answer
  • C) Which two boxes has the mass of 13kg altogether? _
    15·2 answers
  • 8. Which nursing environment does NOT have regular hours during the day?
    14·2 answers
  • Which part of the ear is named after tools, such as the hammer and the anvil? A. endolymph B. cochlea C. auditory ossicles D. or
    14·2 answers
  • A patient has been experiencing severe, persistent allergy symptoms that are reduced when she takes an antihistamine. Before the
    11·1 answer
  • safe patient handling and mobility (sphm) and preventing physical injury is a professional, legal, and ethical concern that appl
    9·1 answer
  • HELP PLEASE AND FAST!
    13·1 answer
  • When the chief complaint is one sided numbness and weakness, what diagnosis are you more concerned about
    7·1 answer
  • The ability for a muscle to work against a resistance for an extended period of time is.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!