The arrector pili muscles, also known as hair erector muscles, are small muscles attached to hair follicles in mammals. Contraction of these muscles causes...

responses. The muscle cells connected to the hair follicle have been visualized by actin immunofluorescence. Arrector pili muscle Arrector pili muscles (APM) are...

hair. Attached to the follicle is a tiny bundle of muscle fiber called the arrector pili. This muscle is responsible for causing the follicle lissis to...

bladder, blood vessels, and the arrector pili in the skin that control the erection of body hair. Skeletal muscle is broadly classified into two fiber...

making the ancestor appear larger and scaring off predators. The arrector pili (muscle that connects the hair follicle to connective tissue) contracts...

units, each with hair follicle, sebaceous gland, and associated arrector pili muscle. In the embryo, the epidermis, hair, and glands form from the ectoderm...

oil producing sebaceous gland which lubricates the hair and the arrector pili muscles, which are responsible for causing hairs to stand up. In humans...

the hair is raised is called piloerection. The contraction of the arrector pili muscle associated with each hair follicle causes the hair to become erect...

pilosebaceous units have a hair follicle, sebaceous gland, and associated arrector pili muscle. In the embryo, the epidermis, hair, and glands are from the ectoderm...

each hair follicle, and the glands themselves are surrounded by arrector pili muscles, forming a pilosebaceous unit. The glands have an acinar structure...