Lab 3 Skin and Tissue

Question 1

Epithelial tissue

Answer 1

Image result for epithelial tissue
Epithelial tissues line the outer surfaces of organs and blood vessels throughout the body, as well as the inner surfaces of cavities in many internal organs. An example is the epidermis, the outermost layer of the skin.

Question 2

Connective tissue

Answer 2

most abundant, widely distributed, and varied type. It includes fibrous tissues, fat, cartilage, bone, bone marrow, and blood. As the name implies, connective tissues often bind other organs together, hold organs in place, cushion them, and fill space.

Question 3

Nervous tissue

Answer 3

term for groups of organized cells in the nervous system, which is the organ system that controls the body’s movements, sends and carries signals to and from the different parts of the body, and has a role in controlling bodily functions such as digestion.

Question 4

Muscle Tissue

Answer 4

muscular system, muscle tissue is categorized into three distinct types: skeletal, cardiac, and smooth. Each type of muscle tissue in the human body has a unique structure and a specific role. Skeletal muscle moves bones and other structures. Cardiac muscle contracts the heart to pump blood. The smooth muscle tissue that forms organs like the stomach and bladder changes shape to facilitate bodily functions.

Question 5

Neuron

Answer 5

specialized cell transmitting nerve impulses

Question 6

Fibroblast

Answer 6

cell in connective tissue which produces collagen and other fibers

Question 7

Osteocyte

Answer 7

bone cell

Question 8

Keratinocyte

Answer 8

skin cell which produces keratin

Question 9

Collagen

Answer 9

most abundant protein in your body. It is the major component of connective tissues that make up several body parts, including tendons, ligaments, skin and muscles and has many important functions, including providing your skin with structure and strengthening your bones

Question 10

Elastin

Answer 10

key protein of the extracellular matrix. It is highly elastic and present in connective tissue allowing many tissues in the body to resume their shape after stretching or contracting. Elastin helps skin to return to its original position when it is poked or pinched.

Question 11

Adipose Tissue

Answer 11

loose connective tissue of adipocytes (fat cells). role is to store energy & cushion and insulate the body. Located beneath the skin, around internal organs, in the breasts and in bone marrow.

Question 12

Dense Regular Connective Tissue

Answer 12

provides connection between different tissues in the human body. The collagen fibers in dense regular connective tissue are bundled in a parallel fashion. Found in areas of the body where large amounts of tensile strength are required, like in ligaments and tendons.

Question 13

Simple Squamous Epithelium

Answer 13

A simple squamous epithelium is a single layer of flat cells in contact with the basal lamina (one of the two layers of the basement membrane) of the epithelium. capillaries, alveoli, glomeruli, and other tissues where rapid diffusion is require

Question 14

Dense Irregular Connective Tissue

Answer 14

has fibers that are not arranged in parallel bundles. Consists of mostly collagen fibers. It has less ground substance than loose connective tissue. Located in the dermis.

Question 15

Simple Cuboidal Epithelium

Answer 15

type of epithelium that consists of a single layer of cuboidal (cube-like) cells. These cuboidal cells have large, spherical and central nuclei. Found on the surface of ovaries, the lining of nephrons, the walls of the renal tubules, and parts of the eye and thyroid.

Question 16

Simple Columnar Epithelium

Answer 16

columnar epithelium that is uni-layered. In humans, a simple columnar epithelium lines most organs of the digestive tract including the stomach, small intestine, and large intestine. Simple columnar epithelia line the uterus

Question 17

Stratified Squamous Epithelium

Answer 17

Squamous (flattened) epithelial cells arranged in layers upon a basal membrane. Found in nearly every organ system where the body comes into close contact with the outside environment – from the skin to the respiratory, digestive, excretory and reproductive systems.

Question 18

Stratified Squamous Epithelium

Answer 18

Squamous (flattened) epithelial cells arranged in layers upon a basal membrane. Found in nearly every organ system where the body comes into close contact with the outside environment – from the skin to the respiratory, digestive, excretory and reproductive systems.

Question 19

Pseudostratified Columnar Epithelium

Answer 19

Appears to be stratified but instead consists of a single layer of irregularly shaped and differently sized columnar cells. Nuclei of neighboring cells appear at different levels rather than clustered in the basal end. Found in the linings of the trachea as well as the upper respiratory tract, prostate and membranous part of male vas deferens

Question 20

Stratified Transitional Epithelium

Answer 20

Stratified tissue made of multiple cell layers, where the cells constituting the tissue can change shape depending on the distention in the organ. Found lining the urinary bladder, ureters and urethra, as well as in the ducts of the prostrate gland.

Question 21

Mesothelium

Answer 21

Epithelium that lines the pleurae, peritoneum, and pericardium.

Question 22

Basement Membrane

Answer 22

Thin, delicate membrane of protein fibers and glycosaminoglycans separating an epithelium from underlying tissue.

Question 23

Endothelium

Answer 23

Single layer of cells lining various organs and cavities of the body, especially the blood vessels, heart, and lymphatic vessels

Question 24

Epidermis

Answer 24

Surface epithelium of the skin, overlying the dermis. Superficial Layer of skin.

Question 25

Dermis

Answer 25

the thick layer of living tissue Below the epidermis which forms the true skin, containing blood capillaries, nerve endings, sweat glands, hair follicles, and other structures.

Question 26

Hypodermis

Answer 26

Beneath the dermis which is beneath the epidermis. It is used mainly for fat storage. Deepest layer.

Question 27

Keratinocytes

Answer 27

Skin cell which produces keratin

Question 28

Melanocytes

Answer 28

Mature melanin-forming cell, especially in the skin.

Question 29

Adipocyte

Answer 29

Fat cell

Question 30

Leukocyte

Answer 30

Colorless or white blood cell

Question 31

Sebaceous Gland

Answer 31

Exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals

Question 32

Eccrine Sweat Gland

Answer 32

Major sweat glands of the human body, found in virtually all skin, with the highest density in palm and soles, then on the head, but much less on the trunk and the extremities

Question 33

Eccrine Sweat Gland

Answer 33

Major sweat glands of the human body, found in virtually all skin, with the highest density in palm and soles, then on the head, but much less on the trunk and the extremities

Question 34

Apocrine Sweat Gland

Answer 34

Associated with hair follicles, continuously secrete a fatty sweat into the gland tubule. Located in the underarm and in genital regions

Question 35

Stratum Corneum

Answer 35

The outermost epidermal layer, consists of dead cells and is the major barrier to chemical transfer through the skin. Clgsb

Question 36

Stratum Granulosum

Answer 36

Grainy appearance due to further changes to the keratinocytes as they are pushed from the stratum spinosum. clGsb

Question 37

Stratum Lucidum

Answer 37

Smooth, seemingly translucent layer of the epidermis located just above the stratum granulosum and below the stratum corneum. This thin layer of cells is found only in the thick skin of the palms, soles, and digits. The keratinocytes that compose the stratum lucidum are dead and flattened. cLgsb

Question 38

Stratum Basale

Answer 38

Deepest epidermal layer and attaches the epidermis to the basal. All of the keratinocytes are produced from this single layer of cells, which are constantly going through mitosis to produce new cells. clgsB.

Question 39

Stratum Spinosum

Answer 39

Spiny in appearance due to the protruding cell processes that join the cells. The “spiny” nature of this layer is an artifact of the staining process. clgSb

Question 40

Loose Connective Tissue

Answer 40

Holds and binds organs together, and is characterized by its loose, multidirectional weave of extracellular fibers

Question 41

Smooth Muscle

Answer 41

Shows no cross stripes under microscopic magnification. It consists of narrow spindle-shaped cells with a single, centrally located nucleus