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2021-05-15

What are the 4 classifications of connective tissue?

What are the 4 classifications of connective tissue?

Connective tissues are classified into four classes: BLOOD, BONE, CARTILAGE, CONNECTIVE TISSUE PROPER.

What are the 4 simple epithelial tissues?

Simple Epithelia Simple epithelial tissues are generally classified by the shape of their cells. The four major classes of simple epithelium are: 1) simple squamous; 2) simple cuboidal; 3) simple columnar; and 4) pseudostratified.

What is the main function of nerve tissue?

Nervous tissue is found in the brain, spinal cord, and nerves. It is responsible for coordinating and controlling many body activities. It stimulates muscle contraction, creates an awareness of the environment, and plays a major role in emotions, memory, and reasoning.

What is unique about nerve cells?

The distinguishing characteristic of nerve cells is their specialization for intercellular communication. This attribute is apparent in their overall morphology, in the specialization of their membranes for electrical signaling, and in the structural and functional intricacies of the synaptic contacts between them.

What is the difference between a neuron and a nerve cell?

Nerves are actual projections of neurons. Neuron is an individual specialized cell which are primarily involved in transmitting information through electrical and chemical signals. They are found in the brain, spinal cord and the peripheral nerves. Neuron is also known as the nerve cell.

How long a nerve cell can be?

Some neurons are very short… less than a millimeter in length. Some neurons are very long…a meter or more! The axon of a motor neuron in the spinal cord that innervates a muscle in the foot can be about 1 meter (3 feet) in length.

What is the most painful nerve in the body?

Trigeminal Neuralgia

  • Trigeminal neuralgia (TN), also known as tic douloureux, is sometimes described as the most excruciating pain known to humanity.
  • Magnetic resonance imaging (MRI) can detect if a tumor or MS is affecting the trigeminal nerve.

What part of the body is least sensitive?

The tongue, lips, and fingertips are the most touch- sensitive parts of the body, the trunk the least.

Which sense is the most sensitive?

hearing

What parts of your body have the highest density touch receptors?

The face, lips, fingertips = highest density of touch receptors. 2.)

Which part of the skin is the most sensitive?

face

How can I stop my skin being sensitive?

General tips for sensitive skin

  1. take short 5 to 10 minute showers with warm — not hot — water.
  2. avoid harsh astringents and exfoliants.
  3. use a gentle, fragrance-free soap.
  4. use essential oils instead of perfumes.
  5. use a gentle, fragrance-free laundry detergent.
  6. try using organic cleaning supplies.

Does skin get more sensitive with age?

Skin ageing affects different skin layers A slower cell turnover and reduction in lipid production on the skins surface means roughness and dryness are more likely. As this particular layer of the skin ages, it becomes more sensitive to UV light.