Night Blindness is caused by thedeficiency of Vitamin ______.A. KB. CC. B12D. A

Q: The shape of the external ear is due toa. skeletal muscle.b. elastic cartilage.c. fibrocartilage.d.…

A: A biological cell is a hub of metabolic activities. The group of biological cells that perform alike…

Q: A bar of light in a specific part of the retina, with a particular length and orientation, is the…

A: A bar of light in a specific part of the retina, with a particular length and orientation, is the…

Q: In humans, most olfactory cells are located in thea. nasal cavity.b. nostrils.c. pharynx.d. roof of…

A: Introduction :- Olfactory receptor cells, also called smell receptors, protein capable of binding…

Q: The nerves for the sense of smell pass through thea. cribriform plate. d. optic canal.b.…

A: The neurons which help in smelling something via sensory cells are called olfactory sensory neurons.…

Q: At night, which type(s) of photopigment enable(s) you to discriminate the colors of neon signs and…

A: Eye is an organ which helps us to provide vision it has several photoreceptors which receives light…

Q: The dilated blood vessels seen in “bloodshot” eyes are vessels of:- a. the retina. b. the cornea. c.…

A: Blood vessel dilation: -  It is the widening of blood vessels, this occurs when arteries and veins…

Q: Cone pigments detect different wavelengths of light due toa. their location in the retina.b. the…

A: Answer is a.)  their location in the retina.

Q: The ciliary body/ muscle change the shape of  the _____________.    a.sclera b.optic disc…

A: The ciliary body is a circular structure which is basically an extension of the iris. It also…

Q: Regarding the eye's adaptation to darkness: a) then it happens faster than the eye's light…

A: The human eye is a sensory organ that responds to light and enables vision. Photoreceptive cells,…

Q: Which statements is/are true? a. The test substances can only be determined in their specific area…

A: The red tongue in the mouth is considered one of the important sensory organs in the body. The…

Q: Which eye infection will resolve on its own? A.Trachoma caused by Chlamydia trachomatis B.ophthalmia…

A: The correct answer is option D.Adenovirus is the most common cause of viral eye infection. It causes…

Q: Night vision begins with stimulation of_______ . a. hair cells c. cone cells b. rod cells d.…

A: Night vision is responsibility of rod cells

Q: Name the eye defect occuring in old people whereby they are unable to see near objects.

A: Eye is the chief organ of the visual system. In most mammals they are paired structures and are oval…

Q: The middle ear converts(A) air pressure waves to fluid pressure waves.(B) air pressure waves to…

A: The middle ear have an eardrum internally and oval window externally. It consists of three bones…

Q: Defective or missing______ cause color blindness.a. hair cells c. cone cellsb. rod cells d.…

A: Eyes are organs of the visual framework. They give creatures vision, the capacity to get and deal…

Q: Which of the following components of the eye allows a person to focus on objects at various…

A: Optic nerves transmit electrical impulse from eyes to brain.   Sclera supports wall of eyeball and…

Q: The comea is covers the iris and pupil .A True .B False

A: Cornea is outer, clear, round, structure. Cornea directs light rays into the eyes.

Q: Fill in the blank:  The distal ends of the olfactory neurons are covered with hairlike…

A: The olfactory bulb and olfactory sensory neurons share neuronal connections (OSNs). The OSNs are…

Q: If someone is born with dense cataracts on both eyes, and the cataracts are removed years later,…

A: The lens inside your eye has a clouding which is termed a cataract.Just behind the iris, the lens…

Q: Which vitamin is important for vision?

A: Vitamin A.

Q: The change in focal length of an eye lens is caused by the action of the:(a) Pupil(b) Retina(c)…

A: Contraction or relaxation of muscles in an eye is responsible for focusing the object, phenomenon…

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: Explain why deficiency of vitamin A causes poor night vision or night blindness

A: The group of fat-soluble nutritional organic compounds retinol, retinal, and retinoic acid…

Q: a mass of gelatinous material covering the crista in the inner ear is called. O A. tectorial…

A: Cells are the structural and functional unit of life. Many cells combine to form tissues and many…

Q: What is the “retina” of the olfactory system?    a. The olfactory epithelium   b. The olfactory…

A: The olfactory system is a system that is responsible for the sense of smell in organisms. The…

Q: Explain why one early symptom of vitamin A deficiency is impaired vision at night (often called…

A: Vitamin A : a. It is a class of nutritionally unsaturated hydrocarbons that include various…

Q: Ear structures from the outer ear into the inner ear are progressively smaller. Explain this…

A: The ear is the hearing organ and it is divided into three segments that include the inner, outer,…

Q: Fill in the blank:  Olfactory bulbs lie on either side of the _______________________ of the ethmoid…

A: Olfactory receptor is also known as the smell receptor. These play a main role in the olfaction or…

Q: 7. A. The Bowmans gland secretes mucous to dissolve tastants. B. Olfaction has a low threshold and…

A: (Because you submitted numerous questions, we'll answer the first one for you. Please provide the…

Q: Night blindness is cause by lack of which vitamin? A. Vitamin A B. Vitamin B C. Vitamin C…

A: Step 1 Night blindness also called nyctalopia is the inability to see properly at night or even in…

Q: A patient instilled a few drops of eye medication into his eyes containing Ephedrine by mistake.…

A: Ephedrine  Ephedrine is defined as an alkaloid which is a hydroxylated form of phenethylamine and…

Q: The______________ is the colored section in the eye aroundthe pupil.

A: The eye is the organ of the human body that is responsible for vision. Vision is the most important…

Q: 1. Olfaction takes place in the: a. eye b. nose c. mouth d. ears 2. Color vision is detected by…

A: The sensory organs are the extension of the nervous system that allows us to perceive our internal…