What is the purpose of the iris diaphragm? Select an answer. a. To provide light for illumination b. To raise and lower the condensor c. To control the light falling on the object on the slide

Q: If someone is color-blind, which structure is malfunctioning? A.None B.Cones C.Cornea D.Rods…

A: Colour blindness is the inability to distinguish certain colours.

Q: Fadi touched a pen lightly and he did not feel how soft it was, while when he firmly touched the…

A: Tactile sensation refers to the sense of touch. It is one of the five senses in our body. Tactile…

Q: 2. Define resolution and state why is it important in distinguishing magnified objects

A: Microscope is used to see and analyse objects/organisms that cannot be seen with normal eye. In…

Q: On average, who detects odors better than other people? a. On average, left-handers detect odors…

A: Olfactory bulb is a structure that is present in the forebrain of vertebrate species and is related…

Q: On your laboratory report, write a recommendation about your experiment "Frog Dissection"

A: Frogs belong to the class amphibian. Although many differences exist betweenhumans and frogs, the…

Q: What would be the consequences if birds and insects do not have structures which can disperse or…

A: The dispersion or refraction of light is a phenomenon that helps the animals to function properly…

Q: Which of these photoreceptor cells do not match their function? a) rods - night vision b) stavar -…

A: Receptors are the substances that receive some signal or a molecule to facilitate detection.…

Q: The human eye focuses bya. changing the thickness of the lens.b. changing the shape of the lens.c.…

A: Sense organs are specialized organs that allow the human body to perceive sight, smell, sound,…

Q: What is the Adaptation of Photoreceptors?

A: Human eye is meant for seeing things. It has been designed in such a way that it can see dark, it…

Q: Enumerate the steps involved in path of entry of light into the eye from an object.

A: Eye is an organ responsible for sight/ vision. There are many structures which works together to…

Q: When you enter a dark room from bright lighted room you are blinded momentarily. Comment.

A: The vision during the day and the night are two separate perceptions in the eye. The day vision and…

Q: Contraction of a muscle usually puts more tension on a structure, but contraction of the ciliary…

A: Ciliary muscle present in the eye is a smooth muscle and mesodermal in origin and is responsible for…

Q: When do you use a stereoscope? List one of its uses. What are the things that cannot be viewed by a…

A: A stereoscope is a binocular microscope (also known as a “dissecting microscope”) that magnifies at…

Q: How do we identify a low-pitched sound?A. Low frequencies cause only weak vibrations of the basilar…

A: Low pitch sounds are pressure waves with low frequency.  The sound  is lower pitch because each…

Q: Damage to the right optic nerve would result in what type of visual field deficit?   Question 6…

A: Damage of an optic nerve can lead to loss of vision, vision distortion and blindness. The nerve…

Q: The highest density of cone cells is found in: a. the crista ampullaris. b. the optic disc. c. the…

A: The highest density of cone cells is found in:

Q: What is the stimulus in this system? Explain vour answer.

A: A variety of neurotransmitters govern the release of GnRH from the hypothalamus which then…

Q: Describe the role of photoreceptors in vision.

A: Photoreceptors are the cells in the retina that react to light. Their distinctive element is the…

Q: Name the part of the eye that(a) determines the colour of a person’s eye(b) Controls the amount of…

A: The eye is an organ, which detects light and sends signals along the optic nerve to the brain. It is…

Q: In the diagram above, identify the part of the brain that is suppressed during blinking and the part…

A: The brain is the most complex organ of any organism. It controls the different processes going on in…

Q: Which statement about compound eyes is true?a. They do not contain a lens or lenslike structure.b.…

A: Answer is option e

Q: In eye transplantation cornea is grafted. Comment.

A: INTRODUCTION: When we talk about eye transplant, then it doesn’t mean that whole eye is transplanted…

Q: We have three types of cones in the retina. Explain how we can see a large range of colors with only…

A: Cone cells are the photo receptors found in the retina of the eye which are meant for color vision…

Q: Vibrations of the stapes are transferred to the _________ window, waves displace the ___________…

A: The stapes is one of the three auditory ossicle bones in the middle ear. It is the smallest bone of…

Q: A. Describe the development of color vision. Why is this a significant development in mammal…

A: Color vision can be described as a person who can perceive up to 1 million different shades of…

Q: Imagine you are drawing a realistic picture that features both a helicopter and an airplane. You…

A: The realistic picture constitutes airplane and helicopter. In the picture,  helicopter appears…

Q: describe only what you see in the picture.

A: Bones are hard and rigid internal structures made up of calcium and phosphates. They contitutte the…

Q: Which is the correct order of the structure through which light passes after entering the eye? O…

A: Question- Which is the correct order of the structure through which light passes after entering the…

Q: When light strikes photoreceptors, what takes place?

A: Introduction Photoreceptor are specialized neurons found in retina, Which convert light energy in to…

Q: Why is a retinal defect, such as retinitis pigmentosa, which causes tunnel vision, associated with…

A: Night blindness  Night blindness is the condition of eye in which a person is unable to get clear…

Q: Which power (low or high) will allow you to see more of the object?

A: Hello, thank you for your question, hope this answer helps you.

Q: Which of the following is a false statement about photoreceptors of the eye? A) Cones are active at…

A: Human retina contain two type of photoreceptor cells rod cells and cone cells. Rod cells are rod…

Q: Compare and contrast light and dark adaptation.

A: The tendency of the retina of the eye to respond to different wavelengths of light is known as…

Q: While viewing an object under low power you see a small organism at the edge of the field of vision.…

A: Step 1 Microscopes are the instrument used for observing smaller objects as well as finer internal…

Q: Wesley is in a movie theater with no windows—the only light is low illumination from the emergency…

A: Photoreceptors are the cells that are sensitive to light. The organ that contains photoreceptors are…

Q: Why do humans see so poorly under water? And whydo goggles help?

A: The eyes are the organ of sight and are composed of the optical system of nerves and one of the…

Q: How could you study an animal’s senses to design a product for humans who are missing one of their…

A: There are five senses smell, sight, hearing and taste. All these sensors allow us to clearly assess…

Q: What is photoreceptors?

A: Receptors are chemical structures made up of proteins that collect and send signals that can be…

Q: In reference to the blondspot, what advantage is it to have the fields of vision from each eye…

A: Hi! As you have posted multiple questions, I would be answering the first one for you. If you need…

Q: When a person blinks, the part of the brain that interprets visual stimulation is suppressed. The…

A: Blinking is a very normal reflex, which happen only when the eye is dry, in bright light and when…

Q: Why are rods and cones sensitive to each other

A: Light rays are detected by the eyes for creating vision. Through vision, we can see the object in…

Q: The order in which the cells in the eye process light is __________. A) photoreceptors; ganglion…

A: The retina contains photoreceptor cells that convert light signals into sensory nerve impulses. The…

Q: Why would it be an advantage for a deer to have a wide visual field, as compared to overlapping,…

A: The human eye is the most valuable and sensitive sense organ. It is a natural optical instrument.…

Q: If you have a transparent or thin specimen, do you need to open or close the iris diaphragm? As…

A: Shutting the iris diaphragm will decrease the measure of enlightenment of the specimen yet expands…

Dissection

Dissection is the process of cutting up the tissue of a dead or live animal or plant, to do anatomical studies and surgical treatments. The purpose of dissection is to learn more about the overall structure of organs and organ systems and thereby understand the physiology of the organism.