Learn: unit 2 EHS tissue pt 2 | Quizlet

ECM of whole blood

Plasma (fluid portion of blood); cyte = mature cell

What is compact bone matrix composed of?

Concentric rings called lamellae; contains spaces for osteocytes called lacunae

Bone tissue 3 cells and ECM

Cells: osteocytes, osteoblasts, osteoclasts. ECM: inorganic calcified matrix

Why does cancellous bone contain open spaces?

Contains red bone marrow that produces blood cells

Bone tissue location

Skeleton

4 compact bone connective tissue functions

Support, protection, point of attachment of muscles, reservoir for minerals

What does cancellous bone contain?

Trabeculae (thin beams of bone); called spongy bone because of its sponge-like appearance

4 cartilage basics

1. Cell: chondrocyte found in lacunae. 2. Avascular. 3. Heals slowly. 4. Perichondrium membrane surrounds cartilage

What is compact bone composed of?

Osteons and the Haversian system

Name 3 cartilage types and describe

1. Hyaline: ends of articulating bone. 2. Elastic: external ear. 3. Fibrocartilage: between bones in knee, intervertebral disks, pubic symphysis

Cancellous bone function

Supports blood-forming tissues

Describe dense fibrous regular location and function

Location: tendons/ligaments. Function: connection

Describe dense fibrous regular cells and ECM

Cells: fibroblasts. ECM: collagen/elastic fibers. Bundles of fibers are arranged in regular parallel rows

Describe fibrous reticular connective tissue 3 locations and 3 functions

Location: spleen, lymph nodes, bone marrow. Function: support, protection, filtration

Describe fibrous reticular connective tissue cells and ECM

Cells: reticular cells. ECM: reticular fibers

Describe loose ordinary areolar location and 2 functions

Location: throughout body. Function: stretchy, flexible connection

Describe loose ordinary areolar 3 cells and ECM

Cells: fibroblasts, macrophages, mast cells. ECM: collagenous and elastic fibers loosely interwoven and embedded in soft viscous ground substance

Describe 3 general characteristics of connective tissue

1. Mostly made of ECM. 2. ECM determines physical characteristics. 3. Consists of fluids, gel, or solid matrix with or without ECM fibers

Skeletal muscle tissue alternate name and microscope characteristics

Alt name: striated voluntary. Micro: threadlike cells with cross striations and many nuclei per cell

Smooth muscle alt name and microscope characteristics

Alt name: non-striated involuntary or visceral. Micro: elongated narrow cells with no cross striations and 1 nucleus per cell

Describe nervous system neuroglia

Special connecting, supporting, coordinating cells that surround neurons

Smooth muscle 3 locations and functions

Location: walls of digestive, respiratory, and genitourinary tracts. Function: movement of substances through tracts

Skeletal muscle location and function

Location: muscles attached to bones. Functions: movement of bones

Describe neurons

Conducting unit of the nervous system

What are neurons composed of (3 parts)?

1. Cell body (soma). 2. Axon (single extension, transmits nerve impulse away from cell body). 3. Dendrites (multiple, transmits nerve impulse towards cell body and axon)

Cardiac muscle location and function

Location: wall of heart. Function: contraction of heart

Cardiac muscle alternative name and microscope characteristics

Alt name: striated involuntary. Micro: branching cells with intercalated disks, cross striations, 1 nucleus per cell

Nervous tissue location and function

Location: brain, spinal cord, nerves. Function: rapid regulation and integration of body activities through excitement and conductivity

Hyaline cartilage amount of ECM

Moderate amount of collagenous or elastic fibers

4 simple columnar functions

Protection, secretion, absorption, moving of mucus

3 simple columnar locations

Lining stomach, intestines, respiratory tract

Simple columnar 3 modifications

Contains goblet cells (secretion), cilia (movement), microvilli (absorption)

Stratified cuboidal function and 2 locations

Function: protection. Location: sweat ducts and pharynx

Stratified columnar functions and 2 locations

Function: protection. Location: segments of male urethra and near anus

Simple cuboidal functions and 3 locations

Function: secretion and absorption. Location: glands, ducts, and tubules of kidneys

Stratified squamous keratinized function and location

Function: protection. Location: skin

Stratified transitional cell description, location, and function

Cells: 10 or more layers thick. Function: protects organ walls from tearing. Location: lining hollow viscera subjected to stress (e.g., bladder)

Pseudostratified columnar functions, location, and modifications

Function: protection. Location: lining air passages and segments of male reproductive system. Mods: cilia (movement) and goblet cells (secretion)

Stratified squamous non-keratinized function and location

Function: protection. Location: lining vagina, mouth, esophagus

Simple squamous function, location, and mesothelium

Function: absorption. Location: endothelium (lining blood and lymphatic vessels). Mesothelium: pleural cavity, pericardium of heart, peritoneum of abdominal cavity

Explain embryonic development

Zygote -> mitosis -> blastocyst -> gastrulation -> gastrula (3 primary germ layers) -> histogenesis -> tissues

Epithelial and connective tissue ECM amounts

Epithelial: little amount of ECM. Connective: mostly ECM