Hair Growth Cycle: Understanding the Phases of Hair Growth

Question 1

Which phase of the hair growth cycle involves active hair shaft production and rapid growth?

Accepted Answer

Anagen

Answer

Catagen

Answer

Telogen

Answer

Exogen

Question 2

In the hair growth cycle, which phase is characterized by ongoing hair growth?

Accepted Answer

Anagen

Answer

Catagen

Answer

Telogen

Question 3

Which phase of the hair growth cycle represents the resting period for the hair follicle?

Accepted Answer

Telogen

Answer

Anagen

Answer

Catagen

Answer

Exogen

Question 4

Which phase of the hair growth cycle is characterized by active hair growth and the formation of a new hair shaft?

Accepted Answer

Anagen

Answer

Catagen

Answer

Exogen

Answer

Telogen

Question 5

Which of the following statements best describes the catagen phase of the hair growth cycle?

Accepted Answer

A transitional phase where hair growth gradually ceases and the hair shaft is released from the hair follicle.

Answer

Phase of active hair growth before the formation of a new hair shaft

Answer

Phase when hair is at its longest length and fully mature

Answer

Phase when hair is actively shed from the scalp

Question 6

What is the main structural protein found in hair and responsible for its strength and flexibility?

Accepted Answer

Keratin

Answer

Myosin

Answer

Collagen

Answer

Elastin

Question 7

What is the name of the small muscle attached to each hair follicle that causes hair to stand up when stimulated?

Accepted Answer

Arrector pili muscle

Answer

Ciliary muscle

Answer

Orbicularis oculi muscle

Question 8

Which hair growth disorder is characterized by excessive hair growth in areas where hair is typically not present?

Accepted Answer

Hypertrichosis

Answer

Alopecia

Answer

Hirsutism

Answer

Trichorrhexis nodosa

Question 9

What is the normal daily hair loss rate for healthy individuals?

Accepted Answer

50-100 hairs

Answer

Over 250 hairs

Answer

150-200 hairs

Answer

10-20 hairs

Question 10

In which phase of the hair growth cycle does active hair growth occur?

Accepted Answer

Anagen

Answer

Telogen

Answer

Exogen

Answer

Catagen

Question 11

Which of the following is the transitional phase between anagen and telogen?

Accepted Answer

Catagen

Answer

Proliferation

Answer

Exogen

Answer

Keratinization

Question 12

Which of the following is NOT a characteristic of telogen hair?

Accepted Answer

Actively growing

Answer

Loosely attached to the scalp

Answer

Thin and less pigmented

Answer

Makes up about 10-15% of total hair

Question 13

What is the term used to describe the natural process of hair shedding?

Accepted Answer

Exogen

Answer

Telogen

Answer

Anagen

Answer

Catagen

Question 14

Which phase of the hair growth cycle is characterized by active hair shaft growth?

Accepted Answer

Anagen

Answer

Exogen

Answer

Catagen

Answer

Telogen

Question 15

Which of the following factors can potentially induce premature entry of hair follicles into the telogen phase?

Accepted Answer

Stress

Answer

Sufficient sleep

Answer

Healthy diet

Answer

Regular hair washing

Question 16

What is the visible part of the hair shaft that extends beyond the skin?

Accepted Answer

Hair shaft

Answer

Dermal papilla

Answer

Hair bulb

Answer

Hair root

Question 17

Which layer of the skin houses the hair follicles?

Accepted Answer

Dermis

Answer

Hypodermis

Answer

Subcutis

Answer

Epidermis

Question 18

Which technique may be employed to enhance hair growth by improving blood flow to the scalp?

Accepted Answer

Scalp massage

Answer

Chemical hair straightening

Answer

Hair dyeing

Answer

Excessive hair brushing

Question 19

Which phase of the hair growth cycle is characterized by active hair growth and typically lasts for several years?

Accepted Answer

Anagen

Answer

Telogen

Answer

Exogen

Answer

Catagen

Question 20

Which of the following can influence the rate at which hair grows?

Accepted Answer

Genetics, nutrition, and stress

Answer

Gender alone

Answer

Hair coloring

Answer

Age and hair care products

Question 21

What is the primary function of the matrix within the hair follicle?

Accepted Answer

Produces new hair cells

Answer

Anchors the hair shaft

Answer

Regulates hair growth cycle

Answer

Stores hair pigments

Question 22

Which layer of the hair shaft is mainly composed of a protein called keratin?

Accepted Answer

Cortex

Answer

Cuticle

Answer

Root

Answer

Medulla

Question 23

What is the function of the arrector pili muscle?

Accepted Answer

Causes hair to stand on end (goosebumps)

Answer

Anchors the hair follicle

Answer

Produces hair pigments

Answer

Secretes sebum

Question 24

What is the underlying cause of androgenetic alopecia?

Accepted Answer

Genetic sensitivity to androgens

Answer

Hormonal imbalances

Answer

Nutritional deficiencies

Answer

Autoimmune disorders

Question 25

Which phase of the hair growth cycle is marked by rapid hair growth?

Accepted Answer

Anagen

Answer

Telogen

Answer

Catagen

Answer

Exogen

Question 26

Approximately how long does the anagen phase typically last?

Accepted Answer

2-7 years

Answer

2-7 months

Answer

2-7 weeks

Answer

2-7 days

Question 27

What is the main purpose of the catagen phase?

Accepted Answer

Transition hair follicle from growth to resting phase

Answer

Prepare hair follicle for new hair growth

Answer

Strengthen hair shaft

Question 28

During the exogen phase, hair follicles:

Accepted Answer

Shed and release hair shafts

Answer

Produce new hair shafts

Answer

Become dormant

Answer

Enter a new anagen phase

Question 29

What is the role of the hair matrix?

Accepted Answer

Produce new hair cells

Answer

Store hair pigment

Answer

Protect the hair shaft

Answer

Anchor the hair follicle

Question 30

Which type of hair growth pattern involves hair growing in a circular or spiral shape?

Accepted Answer

Vortex

Answer

Uniform

Answer

Diffuse

Answer

Receding

Question 31

Which phase of the hair growth cycle is characterized by the active production of hair?

Accepted Answer

Anagen

Answer

Exogen

Answer

Telogen

Answer

Catagen

Question 32

Which hormone is primarily responsible for triggering the transition from the anagen to catagen phase?

Accepted Answer

Dihydrotestosterone (DHT)

Answer

Progesterone

Answer

Estrogen

Answer

Melatonin

Question 33

Which factor has a genetically determined influence on the rate of hair growth?

Accepted Answer

Genetics

Answer

Water intake

Answer

Shampooing frequency

Answer

Sun exposure

Question 34

Which type of hair is characterized by being fully developed and permanent?

Accepted Answer

Terminal hair

Answer

Vellus hair

Answer

Lanugo hair

Answer

Intermediate hair

Question 35

Which hair type is typically dominant on the adult scalp?

Accepted Answer

Terminal hair

Answer

Vellus hair

Answer

Lanugo hair

Answer

Intermediate hair

Question 36

Which phase of the hair growth cycle is the transition period between active hair growth and the resting phase?

Accepted Answer

Catagen

Answer

Progen

Answer

Apalogen

Answer

Exogen

Question 37

In which phase of the hair growth cycle does the hair naturally shed?

Accepted Answer

Exogen

Answer

Anagen

Answer

Telogen

Answer

Catagen

Question 38

Which phase of the hair growth cycle is characterized by active hair growth?

Accepted Answer

Anagen

Answer

Catagen

Answer

Telogen

Answer

Exogen

Question 39

What is the approximate lifespan of a hair follicle?

Accepted Answer

2-7 years

Answer

10-15 years

Answer

5-10 years

Answer

1-3 years

Question 40

Which of the following is NOT a characteristic of the catagen phase?

Accepted Answer

Hair shaft continues to grow

Answer

Hair bulb detaches from papilla

Answer

Hair shaft moves upward

Answer

Hair follicle shrinks

Question 41

What is the main purpose of the hair growth cycle?

Accepted Answer

To replace old hair with new hair

Answer

To provide sensory feedback

Answer

To protect the scalp from the sun

Answer

To regulate body temperature

Question 42

What type of hair loss involves an autoimmune attack on hair follicles?

Accepted Answer

Alopecia areata

Answer

Androgenetic alopecia

Answer

Telogen effluvium

Answer

Traumatic alopecia

Question 43

Which of these indicates a healthy hair growth cycle?

Accepted Answer

Minimal hair shedding

Answer

Flaky scalp

Answer

Greasy hair

Answer

Brittle hair

Question 44

Which phase of the hair growth cycle is characterized by active hair growth?

Accepted Answer

Anagen

Answer

Exogen

Answer

Catagen

Answer

Telogen

Question 45

During which phase does the hair shaft move upward in the follicle?

Accepted Answer

Catagen

Answer

Exogen

Answer

Telogen

Answer

Anagen

Question 46

What is the average duration of the telogen phase for humans?

Accepted Answer

3-4 months

Answer

1-2 weeks

Answer

6-8 months

Answer

1-2 years

Question 47

What is the main function of the dermal papilla during the hair growth cycle?

Accepted Answer

Nourishes hair follicle and initiates hair growth

Answer

Anchors hair follicle in the scalp

Answer

Produces melanin

Answer

Regulates hair shaft pigmentation

Question 48

Which of the following is a disorder that affects the hair growth cycle, resulting in excessive hair shedding?

Accepted Answer

Alopecia areata

Answer

Tinea capitis

Answer

Hirsutism

Question 49

What type of hair loss occurs when the hair follicle is permanently destroyed?

Accepted Answer

Cicatricial alopecia

Answer

Telogen effluvium

Answer

Anagen effluvium

Answer

Non-cicatricial alopecia

Question 50

Which treatment option is commonly used to stimulate hair growth and prevent hair loss?

Accepted Answer

Minoxidil

Answer

Ketoconazole

Answer

Hydrocortisone

Answer

Clotrimazole

Question 51

What is the importance of understanding the hair growth cycle for cosmetologists?

Accepted Answer

Optimizes hair care treatments and prevents hair damage

Answer

Facilitates hair color selection

Answer

Improves hair styling techniques