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
marusya05 [52]
3 years ago
15

How can this PLR (pupillary light reflex) help you determine whether the lesion is in the eye itself or elsewhere?

Biology
1 answer:
Contact [7]3 years ago
4 0

Answer:

Pupillary light reflex refers to the contraction that the pupils present when they light up. In cases of injury to the optic nerve, when the eye where the injured optic nerve is illuminated, since it cannot conduct the stimulus to the brain, neither pupil closes.

Explanation:

Pupillary light reflex refers to the reaction that causes the pupil to close with light thanks to the contraction of the sphincter of the pupil and to open in the dark thanks to the relaxation of that muscle by not receiving any stimulus. A light stimulus reaches the eye and in the retina it is transformed, through a chemical reaction, into an electrical stimulus that will be transmitted through the optic nerve and the visual pathways to the brain. The visual cells of the retina, rods and cones, also act as light receptors that control the pupil's motor activity. Thus, pupil-motor thresholds to light follow the same spectral sensitivity deviations as visual thresholds, which are a function of the state of light adaptation of the retina.

You might be interested in
Jupiter is a planet that...
vitfil [10]
The answer is d......
3 0
3 years ago
Read 2 more answers
Imagine that you are studying alien life-forms discovered on a distant planet. While geneticists are working out the genetic cod
34kurt

A phylogenetic tree based on morphology can be constructed using the presence or lack of characteristics. In this illustration, all aliens except the outgroup possess a spring tail, all aliens possess a fourth eye, two aliens possess two tails, and one alien has a grasping hand. The evolutionary relationships between these organisms can be hypothesized using these traits.

Aliens:

  • We can determine whether the following traits are present in the remaining aliens by using the group of aliens with the tail stalk as our test group.
  • Out group: a group that is maintained apart from the clade but is yet connected to it.
  • If we provide these aliens alphabets for ease of understanding, then aliens will be like in order.
  • We can use the group of aliens with the tail stalk as our test group to see if the following characteristics are present in the remaining aliens.
  • A group that is kept separate from the clade while yet being affiliated with it is known as an out group.
  • The aliens will appear to be in order if we give them alphabets for simplicity.

Learn more about aliens here brainly.com/question/24183412

#SPJ4

6 0
1 year ago
Which question is a testable
podryga [215]

Answer:

A testable question is one that can be answered by designing and conducting an experiment. The answers to a testable question can be observed and measured. Hypothesis- a testable explanation of an observation. A hypothesis is NOT just an educated guess about what you think will happen.

3 0
3 years ago
The small, almond-shaped organs of the female reproductive system, suspended by ligaments in the upper lateral portion of the pe
Mrac [35]

The small, almond-shaped organs of the female reproductive system, suspended by ligaments in the upper lateral portion of the pelvic cavity are known as ovaries.

Ovaries are oval-shaped so are also termed almond-shaped organs and are present on the sides of the uterus in females. In females, the processes of pregnancy and ovulation which is also termed menstruation are controlled by the hormones that are made by ovaries. These hormones include estrogen and progesterone. Another major function of the ovary is that it releases the female gametes known as eggs during the menstrual cycle.

The ovaries are attached to two types of ligaments which are the ovarian ligament and suspensory ligament. Ovaries are connected to the womb by the ovarian ligament while the suspensory ligaments of the ovary contain the ovarian vessels and nerves.

To learn more about ovaries, click here:

brainly.com/question/1305741

#SPJ4

7 0
2 years ago
True or false, in humans, bile breaks lipids into three fatty acids and one glycerol molecule
ArbitrLikvidat [17]
It is true i think just yolo it
4 0
3 years ago
Read 2 more answers
Other questions:
  • What prevents food from entering the nasal cavities?
    9·1 answer
  • True or false aerobic respiration produces more atp than anaerobic respiration
    13·2 answers
  • Of what value are forests besides for wood? Is there a value to forests that is not a monetary value? How much is that value con
    11·1 answer
  • Plants cannot release energy from glucose using Select one: a. glycolysis. b. photosynthesis. c. the Krebs cycle. d. cellular re
    8·1 answer
  • Foods that allow microorganisms to grow are called parasites.*
    13·1 answer
  • When plasma Ca concentration decreases... 1. Parathyroid hormone level increases 2. Parathyroid hormone level decreases 3. Ca an
    13·1 answer
  • Type of biomolecule is used to convert energy to ATP
    14·1 answer
  • 10:<br>34Mwhat is biology ​
    15·1 answer
  • If you don’t provide brands of items used in a method how can that effect the results you collect and why.
    14·1 answer
  • What does an autotroph mean?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!