Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Brianna Izquierdo
SCI221-02 Human Physiology with lab 2024-3 wk7
| Term | Definition |
|---|---|
| Surface Film | Thin film coating the skin; made up of a mixture of sweat, sebum, desquamated cells and fragments, various chemicals, microorganisms; protects the skin |
| Epidermis | Superficial primary layer of the skin; made up entirely of keratinized stratified squamous epithelium; derived from the ectoderm; also includes hairs, sweat glands, sebaceous glands |
| Stratum corneum (horny layer) | Several layers of flakelike dead cells (or corneocytes) mostly made up of dense networks of keratin fibers cemented by glycophospholipids and forming a tough, waterproof barrier; the keratinized layer; a, sulcus (groove) b, friction ridge |
| Stratum lucidum (clear layer) | A few layers of squamous cells filled with eleidin—a keratin precursor that gives this layer a translucent quality (not visible in thin skin |
| Stradum granulosum (granular layer) | 2-5 layers of dying, somewhat flattened cells filled with darkly staining keratohyalin granules and multilayered bodies of glycophospholipids; nuclei disappear in this layer |
| Strudum spinosum (spiny layer) | 8-10 layerd of cells pulled by desmosomes into spiny appearance |
| Stradum basale | Single layer of mostly columnar cells capable of mitotic cell division; it is from this layer that all cells of superficial layers are derived; includes keratinocytes and some melanocytes |
| Dermoepidermal junction (DEJ) | The basement membrane, a unique and complex arrangement of adhesive components that glue the epidermis and dermis together |
| Dermis | deep primary layer of the skin: made up of fibrous tissue:also includes some blood and lymphatic vessels (c), muscles, and nerves: dervived from mesoderm |
| Papillary layer | Loose fibrous tissue with collagenous and elastic fibers; forms nipplelike bumps (papillae, d); includes tactile corpuscles (touch receptors, e) and other sensory receptors |
| Rectiular layer | Tough network (reticulum) of collagenous dense irregular fibrous tissue (with some elastic fibers); forms most of the dermis |
| Hypodermis | Loose fibrous (areolar) connective tissue and adipose tissue; under the skin (not part of the skin); includes fibrous bands or skin ligaments (f) that connect the skin strongly to underlying structures; includes lamellar corpuscles (pressure receptors, g) |
Created by:
bizquierdo318
Popular Physiology sets