skin ปริมาณเยอะสุดใน body, และมันยังมีผลต่อ vitamin D metabolism
“There are four principles so that we can treat melasma quickly right at home and cheaply. – Usage of “so that” for purpose.
“If we can apply all four of these principles, Dr. Nguyen believes…”
Grammar: Conditional sentence (Type 1).
“The skin is the largest organ in the human body.”
Grammar: Superlative structure.
“The skin’s main function is to protect the interior of the body.” Infinitive used to express purpose.
“It also has a role in the metabolism of vitamin D amongst other things.” Coordinating conjunction “also.”
“There are two types of skin: thin skin and thick skin.”
Grammar: Use of colon to introduce a list.
“The soles of your foot and the palm of your hands, they’re much thicker and they’re less elastic.”
Grammar: Comparative adjectives.
“The skin is divided into two main layers: the epidermis and the dermis.”
Grammar: Passive voice.
“The papillary layer is important in forming our own unique fingerprints.”
Grammar: Present continuous for habitual actions.
“The dermis can be divided further into the papillary layer and the reticular layer.”
Grammar: Modal verb “can” for possibility.
“We have the third layer below the dermis called the hypodermis.”
Grammar: Appositive structure.
“The hypodermis contains many adipose tissues.”
Grammar: Present simple tense for general truths.
“Adipose tissue is essentially fat tissue.”
Grammar: Use of “essentially” for emphasis.
“The papillary layer is responsible for forming our unique fingerprints.”
Grammar: Use of “responsible for” to express obligation.
“There is a rich blood supply to the integumentary system.”
Grammar: Existential “there is.”
“The vessels do not supply blood to the epidermis.”
Grammar: Negative form with “do not.”
“The blood vessels rise from the dermis and supply blood to the dermis layer.”
Grammar: Parallel structure.
“The adipose tissue helps in maintaining temperature homeostasis.”
Grammar: Gerund used as a subject.
“The appendages of the skin are found within skin structures.”
Grammar: Present passive voice.
“These include the hair, the hair root, and hair follicle.”
Grammar: Use of “include” to introduce a list.
“We have sebaceous glands which secrete oil to lubricate and waterproof the skin.”
Grammar: Relative clause.
“These glands secrete sweat, our sweat, which we find everywhere in our body.”
Grammar: Emphasis with repetition.
“These muscles are known as erector pili muscles.”
Grammar: Present passive voice.
“These nerve structures send information to the brain as well as from the brain.”
Grammar: Use of “as well as” for addition.
“The epidermis layer is not as simple as shown in the diagram.”
Grammar: Comparative structure.
“The epidermis layer consists of many layers.”
Grammar: Present simple tense.
“The epidermis is avascular, meaning it has no blood supply.”
Grammar: Appositive phrase.
“Let’s have a look at each of these layers in the epidermis.”
Grammar: Imperative sentence.
“On the top of our skin, we have dead cells.”
Grammar: Prepositional phrase.
“The very bottom layer of the epidermis is the stratum basale.”
Grammar: Superlative adjective.
“These cells are actively dividing and will begin moving up.”
Grammar: Present continuous for actions in progress.
“As they move up, they will slowly lose this blood supply.”
Grammar: Temporal conjunction “as.”
“There are other cells found within the stratum basale.”
Grammar: Existential “there are.”
“The melanocytes are responsible for producing melanin.”
Grammar: Present simple tense for general truths.
“Above the stratum basale, we have another layer known as the stratum spinosum.”
Grammar: Prepositional phrase.
“The cells are connected by desmosomes, which are junctions.”
Grammar: Relative clause.
“Above the stratum spinosum, we have another layer known as the stratum granulosum.”
Grammar: Sequential transition.
“This layer is composed of keratinocytes.”
Grammar: Present passive voice.
“We have learned that the epidermis consists of four layers.”
Grammar: Present perfect tense.
“Below the epidermis, we have the dermis layer, which is highly vascularized.”
Grammar: Present participle.
“The papillary layer contains the dermal papillae.”
Grammar: Present simple tense.
“The reticular layer is composed of connective tissue fibers.”
Grammar: Passive voice.
“The thick skin is hairless and contains no hair.”
Grammar: Adjective and noun combination.
“The epidermis layer consists of five main layers instead of four.”
Grammar: Use of “instead of” for comparison.
“The additional layer is the stratum lucidum.”
Grammar: Adjective phrase.
“Now let’s look at hair follicles.”
Grammar: Imperative.
“The hair root is connected to the hair shaft above the skin.”
Grammar: Prepositional phrase.
“Blood vessels supply the hair, allowing it to grow.”
Grammar: Infinitive of purpose.
“The hair follicle is connected to the sebaceous gland.”
Grammar: Passive voice.
“The sebaceous gland secretes oil to lubricate the hair.”
Grammar: Infinitive of purpose.
“This oil also makes the skin waterproof.”
Grammar: Coordinating conjunction “also.”
“The stratum corneum is the top layer of the epidermis.”
Grammar: Superlative structure.
“The cells in this layer are dead.”
Grammar: Simple past tense.
“The reticular layer is located below the papillary layer.”
Grammar: Prepositional phrase.
“The cells are tightly packed together by desmosomes.”
Grammar: Passive voice.
“The epidermis layer contains no blood supply.”
Grammar: Present simple for general truths.
“The melanocytes are located in the stratum basale.”
Grammar: Prepositional phrase.
“Keratinocytes are responsible for forming the top layer of the skin.”
Grammar: Present simple for habitual actions.
“Epidermis consists of multiple layers to protect the body.”
Grammar: Infinitive of purpose.