Download Histology Slides 5

Histology Slides 5
Human Anatomy Lab
Blood
• Structure: Contains erythrocytes, leukocytes, and platelets;
soluble (dissolved) protein fibers and a watery ground
substance form a fluid extracellular matrix called plasma
• Function: Erythrocytes transport oxygen and some carbon
dioxide. Leukocytes initiate and control immune response.
Plasma contains clotting elements to stop blood loss. Platelets
help with blood clotting. Plasma transports nutrients, wastes,
and hormones throughout the body
• Location: Primarily within blood vessels (arteries, veins,
capillaries) and the heart; leukocytes are also located in
lymphatic organs and can migrate to infected or inflamed
tissue in the body
Bone
• Structure: Compact Bone: Calcified matrix arranged in osteons
(concentric lamellae arranged around a central canal
containing blood vessels). Spongy Bone: Lacks the
organization of compact bone; contains macroscopicspaces;
bone arranged in a meshwork pattern.
• Function: Supports soft structures; protects vital organs;
provides levers for movement; stores calcium and
phosphorus. Spongy bone is the site of hemopoiesis
• Location: Bones of the body
Bone
• Structure: Compact Bone: Calcified matrix arranged in osteons
(concentric lamellae arranged around a central canal
containing blood vessels). Spongy Bone: Lacks the
organization of compact bone; contains macroscopicspaces;
bone arranged in a meshwork pattern.
• Function: Supports soft structures; protects vital organs;
provides levers for movement; stores calcium and
phosphorus. Spongy bone is the site of hemopoiesis
• Location: Bones of the body
Ciliated Simple Columnar Epithelium
• Structure: Single layer of tall, narrow, ciliated cells;
oval-shaped nucleus oriented lengthwise in the basal
region of the cell; goblet cells may be present
• Function: Secretion of mucin and movement of
mucus along apical surface of epithelium by action of
cilia; oocyte movement through uterine tube
• Location: Lining of uterine tubes and larger
bronchioles of respiratory tract
Elastic Cartilage
• Structure: Contains abundant elastic fibers;
elastic fibers form web-like mesh around
lacunae; perichondrium present
• Function: Maintain structure and shape while
permitting extensive flexibility
• Location: External ear, epiglottis of the larynx
Dense Irregular Connective Tissue
• Structure: Predominately collagen fibers,
randomly arranged and clumped together;
fibroblasts in spaces among fibers; more ground
substance than in dense regular connective tissue
• Function: Withstands stresses applied in all
direction; durable
• Location: Dermis; periosteum covering bone;
perichondrium covering cartilage, and organ
capsules
Pseudostratified Columnar Epithelium
• Structure: Single layer of cells with varying heights that
appears multilayered; all cells connect to the basement
membrane, but not all cells reach the apical surface. Ciliated
form has goblet cells and cilia; nonciliated form lacks goblet
cells and cilia.
• Function: Protection; ciliated form also involved in secretion
of mucin and movement of mucus across surface by ciliary
action
• Location: Ciliated form lines most of respiratory tract,
including nasal cavity, part of pharynx, larynx, trachea,
bronchi. Nonciliated form is rare; lines epididymis and part of
male urethra
Blood
• Structure: Contains erythrocytes, leukocytes, and platelets;
soluble (dissolved) protein fibers and a watery ground
substance form a fluid extracellular matrix called plasma
• Function: Erythrocytes transport oxygen and some carbon
dioxide. Leukocytes initiate and control immune response.
Plasma contains clotting elements to stop blood loss. Platelets
help with blood clotting. Plasma transports nutrients, wastes,
and hormones throughout the body
• Location: Primarily within blood vessels (arteries, veins,
capillaries) and the heart; leukocytes are also located in
lymphatic organs and can migrate to infected or inflamed
tissue in the body