Some taste disorders are the next ones: Dysgeusia is the distortion of the sense taste, and consists in the distorsion of the taste. This distortion can be caused by alcohol, tobacco toxic substances in generaltumors, infections, zinc deficiency or by external agents burn, radiation, etc.
Taxonomic Position of Peripatus 1. Habit and Habitat of Peripatus: Peripatus is a terrestrial animal found living in moist places, in crevices of rocks, under bark, stones, logs and beneath fallen leaves and other dark and damp places or along stream banks.
It is generally confined to humid habitats. It is nocturnal in nature and predaceous and carnivorous in feeding habit. Most species of Peripatus are predaceous and feed on small invertebrates, such as snails, insects and worms.
A number of species display a particular preference for termites. Most species of Peripatus are viviparous and a single large female may produce 30 or 40 young ones in a year. External Morphology of Peripatus: The body of Peripatus is caterpillar-like. It is soft, elongated, bilaterally symmetrical and more or less cylindrical and ranges from 1.
The external segmentation is indistinct and marked only by the presence of paired appendages. Numerous annuli or superficial lines mark the body, but such annuli do not correspond to the segmentation. The skin covered by the thin cuticle is soft and has a velvety texture and thrown into a number of fine transverse ridges bearing numerous conical papillae or tubercles armed with little chitinous spines.
The colouration varies considerably in different species from dark grey to brown. The ventral surface is nearly always flesh-coloured, while the dorsal surface has a darker colour. But blue, green, red-orange or black colourations are also marked.
The entire body of Peripatus may be divided into an indistinctly marked off head and an elongated trunk. The head of Peripatus bears a pair of eyes, a pair of antennae, a pair of jaws or mandibles, and a pair of oral papillae. The eyes are simple and dorsal in position. They resemble the eyes of chaetopods.
One pair of antennae represents the first pair of appendages. The antennae are ringed and taper slightly till near their termination, where they are slightly enlarged. The rings bear a number of spines. The free end of each antenna is covered by a sheath of spiny tissue. One pair of jaws or mandibles constitute the second pair of appendages.
These are present deep inside the mouth cavity. Each jaw is small, muscular, stumpy and provided at its free end with a pair of sharp cutting blades. Each jaw is composed of two curved, falciform pointed chitinous plates, the inner toothed and the outer concave edge.
The jaws have their convex edge directed forwards and their concave or cutting edge turned backwards. The inner cutting plate usually bears a number of cutting teeth in addition to the main tooth.
The jaws appear to be used for tearing the food.The sense of touch makes you aware of pain, temperature, pressure, vibration, and body position. Skin, muscles, tendons, joints, and internal organs have nerve endings (receptors) that detect these sensations.
Some receptors give the brain information about the position and condition of internal organs. CHAPTER EIGHT Sense Organ Disorders A brief review of the sense organs will be given here. The eye is the organ of vision. Sight is the most developed sense in humans, followed closely by hear- When combined, scalp and body acupuncture treat root problems of dizziness.
ADVERTISEMENTS: In this article we will discuss about Scorpions: 1. Habit, Habitat and Distribution of Scorpions 2. External Features of Scorpions 3.
Appendages 4. Body Wall 5. Body Cavity, Musculature and Endoskeleton 6. Digestive System 7.
Excretory System 8. Blood Vascular System 9. Respiratory System Nervous System Sense Organs The sense of touch makes you aware of pain, temperature, pressure, vibration, and body position. Skin, muscles, tendons, joints, and internal organs have nerve endings (receptors) that detect these sensations.
Some receptors give the brain information about the position and condition of internal organs. Biostatistics is the application of statistical methods to the problems of biology, including human biology, medicine, public health, agriculture, veterinary and genetics.
The primary aim of statistical methods is to condense the raw data in a way that it is able to convey some meaningful conclusion at the first sight. Start studying The Sensory Organs - Diseases and Disorders.
Learn vocabulary, terms, and more with flashcards, games, and other study tools.