Hair Cycle and Alopecia Quiz
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Questions and Answers

What is the telogen stage in the hair cycle?

Shedding (resting) stage where hair rests and eventually sheds.

What is the average hair loss per day?

30-50 strands.

What is alopecia areata?

Patchy hair loss occurring on scalp and other parts of the body.

What is alopecia totalis?

<p>Balding over the entire head.</p> Signup and view all the answers

What is alopecia universalis?

<p>Balding of the entire body.</p> Signup and view all the answers

Which two methods are used for stretching the scalp?

<p>Scalp Expander (C), Scalp Extender (D)</p> Signup and view all the answers

What is a scalp extender?

<p>A sheet of highly stretchable material used in alopecia reduction surgery.</p> Signup and view all the answers

What is a scalp expander?

<p>A balloon-like membrane placed under the scalp and inflated gradually.</p> Signup and view all the answers

What causes dry scalp?

<p>Lack of sebaceous gland activity.</p> Signup and view all the answers

What is an oily scalp attributed to?

<p>Overstimulated sebaceous glands or poor hygiene.</p> Signup and view all the answers

What is a whorl in terms of hair?

<p>A patch of hair forming a circular pattern at the crown area.</p> Signup and view all the answers

What is a cowlick?

<p>A tuft of hair directed straight out of the scalp.</p> Signup and view all the answers

What is meant by hair stream?

<p>Hair growing in the same direction.</p> Signup and view all the answers

What is texture in relation to hair?

<p>The measurement or tactile quality of each hair fiber's diameter.</p> Signup and view all the answers

What does diameter refer to when talking about hair?

<p>The thickness or width of a single hair strand.</p> Signup and view all the answers

What are the three types of hair textures?

<p>Medium (A), Coarse (B), Fine (D)</p> Signup and view all the answers

What is bacteria?

<p>One-celled microorganisms that survive in dark, warm, damp and contaminated areas (A)</p> Signup and view all the answers

What is contamination?

<p>The presence of unclean materials or tools left on a surface</p> Signup and view all the answers

What is a disinfectant?

<p>A chemical that destroys or inhibits the growth of microorganisms</p> Signup and view all the answers

What occurs during an infection?

<p>Pathogenic bacteria or viruses have entered the body through any opening or broken skin</p> Signup and view all the answers

What does a Material Safety Data Sheet (MSDS) provide?

<p>Proper information and procedures for handling, working with, and storing chemicals in the workplace</p> Signup and view all the answers

What does OSHA stand for?

<p>Occupational Safety &amp; Health Administration</p> Signup and view all the answers

What is overexposure?

<p>Excessive contact with a substance which may result in an allergic reaction (A)</p> Signup and view all the answers

What is Personal Protective Equipment (PPE)?

<p>Provides a barrier between potential blood spills and areas of the body</p> Signup and view all the answers

What are viruses?

<p>Smaller than bacteria and can attack human cells by entering the cell wall</p> Signup and view all the answers

Two types of bacteria are __________.

<p>Non Pathogenic and Pathogenic</p> Signup and view all the answers

What is non-pathogenic bacteria?

<p>Not harmful but actually helpful in digestion and stimulating the immune system</p> Signup and view all the answers

What is pathogenic bacteria?

<p>Harmful bacteria that can cause disease</p> Signup and view all the answers

What are the three forms of pathogenic bacteria?

<p>Cocci, Bacilli, and Spirilla</p> Signup and view all the answers

What are cocci?

<p>Circular-shaped bacteria that produce pus and appear alone or in groups</p> Signup and view all the answers

What are bacilli?

<p>Long, rod-shaped bacteria that can cause diseases like tetanus and influenza</p> Signup and view all the answers

What are spirilla?

<p>Spiral-shaped, twisted bacteria that can cause syphilis and Lyme disease</p> Signup and view all the answers

What does asymptomatic mean?

<p>A person that carries the bacteria or virus but has no symptoms of the actual disease</p> Signup and view all the answers

What are the two types of parasites?

<p>Both A and B (C)</p> Signup and view all the answers

What are animal parasites?

<p>Parasites that produce diseases such as Scabies and pediculosis</p> Signup and view all the answers

What do plant parasites produce?

<p>Mold, mildew, yeast, and fungus infections such as ringworm</p> Signup and view all the answers

What are some other types of viruses mentioned?

<p>All of the above (D)</p> Signup and view all the answers

What is herpes simplex?

<p>Characterized by fluid-filled bumps atop and raised, red area, commonly a cold sore</p> Signup and view all the answers

What does Human Hepatitis A, B, C do?

<p>Viruses that attack the liver and can be transmitted through blood or bodily fluids</p> Signup and view all the answers

What is Human Immunodeficiency Virus (HIV)?

<p>A bloodborne pathogen that weakens the immune system</p> Signup and view all the answers

What is Acquired Immune Deficiency Syndrome (AIDS)?

<p>The final stage of HIV virus that destroys the immune system</p> Signup and view all the answers

What are signs of infection?

<p>Heat, ache, redness, pus, swelling</p> Signup and view all the answers

What is decontamination?

<p>The removal of any infectious materials on tools or surfaces</p> Signup and view all the answers

What are the three levels of chemical processes for controlling infection?

<p>All of the above (D)</p> Signup and view all the answers

What is sanitation?

<p>Will remove dirt and reduce the number of pathogenic bacteria but will not kill bacteria</p> Signup and view all the answers

What is disinfection?

<p>Destroys most pathogenic bacteria and toxins on non-porous surfaces</p> Signup and view all the answers

What is sterilization?

<p>Destruction of living microorganisms on an object or surface</p> Signup and view all the answers

What is an autoclave container?

<p>A strong, steel vessel that uses pressurized steam on porous materials</p> Signup and view all the answers

What is an ultraviolet container?

<p>A dry sanitizer that emits ultraviolet radiation to destroy germs</p> Signup and view all the answers

What is effleurage?

<p>A type of massage manipulation that produces gliding, stroking movements</p> Signup and view all the answers

What is petrissage?

<p>A type of massage produced by kneading, lifting, or grasping movements</p> Signup and view all the answers

What is the direction of manipulation during a massage?

<p>Start at the insertion of the muscle and move toward the origin</p> Signup and view all the answers

What is friction in massage?

<p>Deep rubbing, rolling, or wringing movement applied with pressure</p> Signup and view all the answers

What is vibration in massage?

<p>A rapid shaking movement performed over a part of the body</p> Signup and view all the answers

What is percussion or tapotement?

<p>Short, light tapping or slapping movements</p> Signup and view all the answers

What are the components of a cell?

<p>Cell Membrane, Cytoplasm, Centrosome, Nucleus</p> Signup and view all the answers

What is the cell membrane?

<p>Thin membrane around the cytoplasm of a cell that controls substance passage</p> Signup and view all the answers

What is cytoplasm?

<p>Watery material found between the cell membrane and nuclear membrane</p> Signup and view all the answers

What is the centrosome?

<p>A specialized region of a living cell next to the nucleus</p> Signup and view all the answers

What is the nucleus?

<p>The central part of the cell that contains DNA and RNA</p> Signup and view all the answers

What is cell metabolism?

<p>Method used by living cells to process nutrient molecules</p> Signup and view all the answers

What is anabolism?

<p>Constructive stage of metabolism where complex molecules are built up</p> Signup and view all the answers

What is catabolism?

<p>Destructive stage of metabolism where complex molecules are broken down</p> Signup and view all the answers

What are tissues?

<p>Groups of cells that act together for a specific purpose</p> Signup and view all the answers

What is epithelial tissue?

<p>Protective covering for the body's surfaces and organs</p> Signup and view all the answers

What is nerve tissue?

<p>Carries signals back and forth to the brain to manage bodily functions</p> Signup and view all the answers

What is muscular tissue?

<p>Contracts when stimulated to produce movement</p> Signup and view all the answers

What is connective tissue?

<p>A supporting and protective layer surrounding other tissues and organs</p> Signup and view all the answers

What is liquid tissue?

<p>Blood and lymph that carry waste, hormones, and food throughout the body</p> Signup and view all the answers

What is alopecia?

<p>Hair loss in abnormal amounts</p> Signup and view all the answers

What is canities?

<p>Medical term for gray hair</p> Signup and view all the answers

What is the cuticle?

<p>The tough outer protective covering of the hair shaft</p> Signup and view all the answers

What is eumelanin?

<p>Type of melanin that produces brown to black pigments in the hair</p> Signup and view all the answers

What is density regarding hair?

<p>Number of hair strands on the scalp per square inch</p> Signup and view all the answers

What is pheomelanin?

<p>Type of melanin that produces yellow to red pigments in the hair</p> Signup and view all the answers

What is pityriasis?

<p>Commonly known as dandruff, characterized by flaky skin on the scalp</p> Signup and view all the answers

What is porosity in hair?

<p>The ability of the hair to absorb moisture within a relative amount of time</p> Signup and view all the answers

What is texture in relation to hair?

<p>The measurement or tactile quality of each hair fiber's diameter</p> Signup and view all the answers

What is tinea?

<p>Technical term for ringworm of the skin</p> Signup and view all the answers

What is the cortex of the hair?

<p>Soft, elastic thick inner layer containing melanin and keratin</p> Signup and view all the answers

What is the medulla of the hair?

<p>Deepest layer consisting of round cells</p> Signup and view all the answers

What does the hair root consist of?

<p>Follicle, Bulb, Dermal Papilla, Arrector pilli muscle, and sebaceous glands</p> Signup and view all the answers

What is a follicle?

<p>The depression surrounding the hair root where hair formation begins</p> Signup and view all the answers

What is the bulb of the hair?

<p>Rounded, club-shaped part at the very end of the root</p> Signup and view all the answers

What is the dermal papilla?

<p>Mass of blood and nerves located under the bulb</p> Signup and view all the answers

What is the arrector pili muscle?

<p>Small involuntary muscle located along the side of the hair follicle</p> Signup and view all the answers

What do sebaceous glands do?

<p>Produce oily substance called sebum to lubricate hair and skin</p> Signup and view all the answers

What does the development of a single strand of hair involve?

<p>Amino Acids, Peptide Bonds, Polypeptide Chains, Protofibrils, Microfibrils, Macrofibrils, Cortical Fibers, Cuticle Scales</p> Signup and view all the answers

What are amino acids?

<p>Connected by peptide bonds to form long chains</p> Signup and view all the answers

What is a protofibril?

<p>Three alpha helix coils twisted together to form a structure</p> Signup and view all the answers

What is a microfibril?

<p>Produces a macrofibril through bundles</p> Signup and view all the answers

What is a macrofibril?

<p>Hundreds of microfibrils cemented together in a fibrous protein bundle</p> Signup and view all the answers

What is a cortical fiber?

<p>Created from hundreds of macrofibrils grouped together</p> Signup and view all the answers

What are cuticle scales?

<p>Dries, dead skin cells that surround the cortex</p> Signup and view all the answers

What is lanugo/vellus hair?

<p>Soft, white downy hair usually lacking a medulla</p> Signup and view all the answers

What is terminal hair?

<p>Pigmented hair located on the scalp and body</p> Signup and view all the answers

What are the three stages of hair growth?

<p>Anagen, Catagen, Telogen</p> Signup and view all the answers

What is the anagen stage?

<p>Growing stage where hair grows about 1/2 inch per month</p> Signup and view all the answers

What is the catagen stage?

<p>Intermediary stage of hair growth</p> Signup and view all the answers

Study Notes

Bacteria and Infection Control

  • Bacteria are one-celled microorganisms thriving in dark, warm, and contaminated environments.
  • Contamination is the presence of unclean materials on surfaces.
  • Disinfectants are chemicals that destroy or inhibit the growth of microorganisms.
  • Infections occur when pathogenic bacteria or viruses enter the body through openings or broken skin.
  • Overexposure can cause allergic reactions or other unwanted side effects from excessive contact with substances.

Safety Regulations and Procedures

  • Material Safety Data Sheet (MSDS) provides necessary information for handling and storing chemicals.
  • OSHA sets and enforces employee training and education standards to improve workplace safety.
  • Personal Protective Equipment (PPE) serves as a barrier against potential blood spills, including gloves and eye protection.

Types of Bacteria

  • Two types of bacteria: Non-Pathogenic (helpful, making up 70% of bacteria) and Pathogenic (harmful, causing diseases).
  • Pathogenic bacteria fall into three forms: Cocci (round), Bacilli (rod-shaped), and Spirilla (spiral).

Disease-Causing Agents

  • Viruses are smaller than bacteria and invade human cells through cell walls.
  • Examples of viruses include Herpes Simplex, Human Hepatitis (A, B, C), HIV, and AIDS.
  • Animal parasites like Scabies and pediculosis cause diseases, while plant parasites cause infections like ringworm.

Infection Signs and Sterilization Methods

  • Signs of infection include heat, ache, redness, pus, and swelling.
  • Decontamination removes infectious materials from tools or surfaces.
  • Three levels of controlling infection: Sanitation (removes dirt), Disinfection (destroys most bacteria), and Sterilization (destroys all microorganisms).

Massage Techniques

  • Effleurage is a gentle gliding massage to relax muscles.
  • Petrissage involves kneading movements that stimulate muscles.
  • Friction is a deep rubbing movement enhancing circulation.
  • Vibration involves rapid shaking for relaxation but is rarely used by cosmetologists.

Cell Structure Basics

  • Cells consist of four main components: Cell Membrane (controls substance passage), Cytoplasm (contains nutrients), Centrosome (facilitates division), and Nucleus (contains DNA/RNA).

Tissue Types

  • Four types of tissues: Epithelial (protective covering), Nerve (signal transmission), Muscular (movement), and Connective (support and protection).

Hair Structure and Growth

  • Hair consists of the cuticle (protective outer layer), cortex (inner elastic layer), and medulla (deepest layer).
  • Hair roots consist of the follicle, bulb, dermal papilla (nutrient supply), arrector pili muscle, and sebaceous glands (oil production).

Hair Growth Stages

  • Three stages of hair growth: Anagen (growing stage), Catagen (intermediary stage where hair disconnects from the follicle), and Telogen (shedding/resting stage).

Hair Characteristics

  • Average hair loss is 30-50 strands per day.
  • Alopecia conditions include Alopecia Areata (patchy loss), Totalis (balding of the head), and Universalis (total body balding).

Scalp Stretching Techniques

  • Scalp Extender is a stretchable sheet inserted during alopecia surgery.
  • Scalp Expander is a balloon-like device gradually inflated to stretch the scalp prior to surgery.

Scalp Conditions

  • Dry scalp occurs due to a lack of sebaceous gland activity, leading to flakiness and itchiness.### Oily Scalp
  • Caused by overactive sebaceous glands, inadequate hygiene, poor diet, or unsuitable cleansing products.
  • Characterized by a greasy appearance on the scalp and an oily coating on hair shafts.

Whorl

  • A circular patch of hair that forms a distinctive pattern at or near the crown.
  • More pronounced in children compared to adults.

Cowlick

  • A tuft of hair that grows straight out from the scalp, differing in direction from surrounding hair.

Hair Stream

  • Refers to hair follicles that are slanted and grow in the same direction.
  • Opposite hair growth directions form natural parts or dividing lines in hair.

Texture

  • Represents the tactile quality and measurement of each hair fiber's diameter.

Diameter

  • The thickness or width of an individual hair strand.

Three Types of Hair Textures

  • Hair can be classified into three textures: Coarse, Medium, and Fine.

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Description

Test your knowledge on the hair cycle and various types of alopecia. This quiz covers stages of hair growth such as telogen, average daily hair loss, and specific forms of alopecia. Get ready to deepen your understanding of scalp health and hair loss conditions.

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