Hair Follicle | Study Guide - Edubirdie

University:
Michigan State University
Course:
ANTR 211 | Human Tissues and Cells for Medical Illustrators
Academic year:

2024
Views:

383

Pages:

1
Author:

Lamghari6kx

Hair Follicle The hair follicles extend down into the dermis or even the hypodermis of the skin. Hair follicles produce all the hair on the body. The deep end of the hair follicle forms a “hair bulb.” A hair papilla (knot of capillaries) protrudes into the hair bulb and nourishes it. The hair root is encased in and external and internal root sheath. Sebaceous glands are wrapped around the hair follicles. They secret an oily sebum that keeps hair pliable and helps waterproof the skin to prevent dehydration. The smallest muscles of the body are found attached to the hair follicles. They are called arrector pili muscles. These smooth muscle fibers extend from the wall of the hair follicle to the epidermis. When exposed to a cool breeze, the muscle will contract and pull the hair straight up. This is how Cool air Goose bump hair goose bumps are formed. skin causes muscle to contract. arrector pili muscle muscle contracts forms.

Related Documents

Hair Follicle

Hair Follicle - Page 1

of 1

Recommended Documents

Bones and Features of the Skull - Cranium and Face

Bones and Features of the Skull - Cranium and Face

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

The Central Nervous System

The Central Nervous System

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

Muscles of the Anterior Arm and Forearm

Muscles of the Anterior Arm and Forearm

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

Thoracic Abdominal Aorta

Thoracic Abdominal Aorta

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

Endocrine Gland Matching

Endocrine Gland Matching

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

How Muscle Contractions Work

How Muscle Contractions Work

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

Organs and Structures of the Respiratory System

Organs and Structures of the Respiratory System

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

Characteristics of Epithelial Tissue

Characteristics of Epithelial Tissue

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

Muscles of Leg

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide

Vision and the Structures of the Eye - Multiple Choice Test

Vision and the Structures of the Eye - Multiple Choice Test

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Answer Key

Arteries of the Upper Limb (Shoulder, Arms & Hands)

Arteries of the Upper Limb (Shoulder, Arms & Hands)

Michigan State University ANTR 211 | Human Tissues and Cells for Medical Illustrators

Study Guide