As the vertebrate lineage evolved to fill different niches, the region of the brain that received information became better developed than other regions. Among mammals, the became subdivided into specialized sensory areas as the body grew more complex. Environmental stimuli put selection pressure on the - cortex, which evolved to reflect the importance of touch-sensory inputs from different parts of the body. For example, the brain of the burrowing eastern mole accommodated very sensitive In contrast, the brain of the star-nosed mole, which hunts using the appendages around its nose, accommodated sensitive As the vertebrate lineage evolved to fill different niches, the region of the brain that received information became better developed than other regions. Among mammals, the most critical to survival from the largest body part - cortex, which evolved to reflect the importance of touch-sensory least important to reproduction For example, the brain of the burrowing eastern mole accommodated very sensitive In contrast, the brain of the star-nosed mole, which hunts using the appendages around its nose, accommodated sensitive ided into specialized sensory areas as the body grew more complex. Environmental As the vertebrate lineage evolved to fill different niches, the region of the brain that received information became better developed than other regions. Among mammals, the cerebellum became subdivided into specialized sensory areas as the body grew more complex. Environmental ressure on the - cortex, which evolved to reflect the importance of touch-sensory cerebral cortex arts of the body. For example, the brain of the burrowing eastern mole accommodated very sensitive motor neurons ontrast, the brain of the star-nosed mole, which hunts using the appendages around its nose, accommodated sensitive As the vertebrate lineage evolved to fill different niches, the region of the brain that received information became better developed than other regions. Among mammals, the stimuli put selection pressure on the inputs from different parts of the bod In contrast, the brai accommodated sensitive became subdivided into specialized sensory areas as the body grew more complex. Environmental cortex, which evolved to reflect the importance of touch-sensory ain of the burrowing eastern mole accommodated very sensitive le, which hunts using the appendages around its nose. As the vertebrate lineage evolved to fill different niches, the region of the brain that received information became better developed than other regions. Among mammals, the ears. became subdivided into specialized sensory areas as the body grew more complex. Environmental stimuli put selection pressure on the cortex, which evolved to reflect the importance of touch-sensory inputs from different parts of the body. For example, the brain of the burrowing eastern mole accommodated very sensitive In contrast, the brain of the star-nosed mole, which hunts using the appendages around its nose, ensitive eyes. forepaws. somatosensory visual auditory As the vertebrate lineage evolved to fill different niches, the region of the brain that received information became better developed than other regions. Among mammals, the became subdivided into specialized sensory areas as the body grew more complex. Environmental stimuli put selection pressure on the -cortex, which evolved to reflect the importance of touch-sensory inputs from different parts of the body. For example, the brain of the burrowing eastern mole accommodated very sensitive In contrast, the brain of the star-nosed mole, which hunts using the appendages around its nose, accommodated sensitive teeth. hind limbs. nasal extensions
Anatomy and Physiology of Special Sensory Organs
Sensory organs can be labeled as special sensory structures that permit sight, hearing, odor, and flavor. Sensory structures permitting proprioception, touch, thermal, and pain perception can be classified as more advanced sensory organs. The sensory neurons are trained to find out modifications in the external and internal conditions so that a person's body can react to that change. A stimulus is the first signal that is recognized by any sensory receptor of the body. Stimulus is an impulse generated when there is a change in the surroundings of a person. For example, a heated environment will alert the brain through the thermal sensory organs and generate a reflex accordingly.
Sensory Receptors
The human sensory system is one of the most complex and highly evolved structures, which processes a myriad of incoming messages. This well-coordinated system helps an organism or individual to respond to external stimuli, appropriately. The sensory receptors are an important part of the sensory system. These receptors are specialized epidermal cells that respond to external environmental stimuli. These receptors consist of structural and support cells that form the peripheral unit of the receptor and the neural dendrites which receive and detect the external stimuli.
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