Search Results for: hair
Blood Vessels Hold Key To Thicker Hair Growth
MGH researchers have succeeded in growing hair faster and thicker in mice, thanks to a protein that promotes blood vessel... Read More
Terminal hair
Definition noun The mature type of hair characterized by being pigmented, thicker, and with a larger diameter than the... Read More
Vellus hair
Definition noun Very fine, non-pigmented hair that covers most of the body of human and other mammals Supplement The vellus... Read More
Phenotypic ratio
Phenotypic Ratio Definition How would one define phenotypic ratio? The correlation between the amount of offspring that... Read More
Integumentary system
Integumentary System Definition The integumentary system is the outermost layer of the body. The animal body, in... Read More
Crown of head
Crown of Head Definition The crown of the head is the upper dorsal part (or area) of the head. Several creatures have... Read More
Family traits
When one thinks of family, they often think of persons who are blood-related to each other as parents to their children and... Read More
Hair shaft
Hair shaft The non-growing portion of a hair which protrudes from the skin, i.e., from the follicle. Synonym: scapus... Read More
Hypertrichosis
Definition noun, plural: hypertrichoses An atypical hair growth in excess over the body Supplement Trichosis is an archaic... Read More
Sensory Systems
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal and... Read More
Independent Assortment and Crossing Over
Reviewed by: Mary Anne Clark, Ph.D. The previous tutorial investigates the process of meiosis, where... Read More
Incomplete dominance
Incomplete Dominance Definition After Gregor Mendel discovered inheritance laws, the term ''incomplete dominance'' was... Read More
Erector muscles of hairs
Erector muscles of hairs --> arrector pili muscles bundles of smooth muscle fibres, attached to the deep part of the hair... Read More
Inherited traits
What are Inherited Traits? The characteristics or traits that are passed from parents to offspring are known as inherited... Read More
Hypomelanism
All the body cells of living organisms bear some color due to one or the other pigment molecule or complex. The pigment can... Read More
Sebaceous gland
Definition noun, plural: sebaceous glands An exocrine gland secreting sebum that lubricates hair and skin Supplement A... Read More
Smooth muscle
The smooth muscle can be described as a type of muscle in the human body that is non-striated and involuntary in action.... Read More
Reproductive system
What is the Reproductive System? The reproductive system of an organism is the biological system made up of all the... Read More
Polygenic trait
Polygenic Trait Definition Polygenic trait refers to a trait that is controlled by multiple non-allelic genes. These genes... Read More
Homozygous
Homozygous Definition Diploid organisms that have a genotype of identical alleles for a trait or phenotype at a specific... Read More
Widows peak
widow's peak A sharp point of hair growth in the midline of the anterior scalp margin, usually resulting from recession of... Read More