Download Week 2--Histology - Orange Coast College

Bio 221 - Lab 2
Histology/Integumentary
For each of the specific tissues, know:
 To which of the four primary tissue types the specific example
belongs
 The complete name of the tissue
 One location of the tissue
 One function of the tissue
 The assigned histological details of each tissue
I. Epithelial Tissue: This tissue covers and lines surfaces inside &
outside of the body. Glands are also derived from epithelial tissue.
Typically this tissue is arranged in layers and composed of a
specific type of epithelial cell, based on shape. The tissue is
secured to deeper connective tissue by way of a thin basement
membrane. A free surface that is not attached to any other tissue
is found on the side opposite that of the basement membrane. Air
or a body fluid may contact the free surface of the epithelium.
A. Simple squamous epithelium (epithelium or epithelial tissue)
B. Simple cuboidal epithelium
 cuboidal epithelial cell
 free/apical surface
 basement membrane
C. Simple columnar epithelium
 columnar epithelial cell
 free/apical surface
 basement membrane
D. Pseudostratified ciliated columnar epithelium
 columnar epithelial cell
 free/apical surface
 cilia
 goblet cell
 basement membrane
E. Stratified squamous epithelium
 squamous epithelial cell
 free/apical surface
 basement membrane
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F. Transitional epithelium
 cuboidal epithelial cell
 free/apical surface
 basement membrane
II. Connective Tissue: This tissue is characterized by cells scattered
in a non-cellular substance called matrix. The cell types vary as
does the amount and composition of the matrix found between
the cells.
A. Bone/Osseous connective tissue
 osteocyte
 lacuna
 central canal
 lamella
B. Hyaline cartilage
 chondrocyte
 lacuna
 matrix
C. Fibrocartilage
 chondrocyte
 lacuna
 collagen fiber (in the matrix)
D. Dense fibrous tissue
 fibroblasts (just their nuclei can be seen; however, these
cells may not be visible at all)
 collagen fibers
E. Areolar tissue
 fibroblasts (just their nuclei can be seen)
 collagen fibers
 elastic fibers
F. Adipose tissue
 Fat cell/signet ring cell/adipocyte
 nuclei
 Fat vacuole
G. Reticular tissue
 reticular fibers
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H. Blood/Vascular tissue
 white blood cell/leukocyte
 red blood cell/erythrocyte
 plasma (this is the name of blood matrix)
III. Muscle Tissue: Muscle tissue cells are called fibers. These cells
vary in their number and location of nuclei, their shape, and
whether or not they appear banded (i.e. striated).
A. Skeletal
 nuclei
B. Cardiac
 Nucleus/nuclei
 intercalated disc
C. Smooth
 nucleus
IV. Nervous Tissue: Nervous tissue includes two major categories of
cells, neurons and neuroglia. The study of neuroglia will be
reserved for lecture. Neurons will be studied in more detail in
later labs.
A. Neuron
 cell body
 processes
V. Integumentary System/Skin:
A. Layers
 Epidermis
 Dermis
 Papillary layer
 Reticular layer
 Hypodermis/Subcutaneous tissue (note: this is not a layer
of the skin but is a layer deep to the skin)
B. Structures
 Dermal papilla(e)
 Sebaceous gland
 Sweat gland
 Hair shaft
 Hair follicle
3
 Arrector pili (muscle)
 Meissner’s corpuscle (found in dermal papillae)
 Pacinian/lamellar corpuscle
4
Biol 221 Anatomy& Physiology
Histology Worksheet
Major
Tissue
Type
NAME OF
TISSUE
Epithelial
Tissue
Simple
Squamous
ILLUSTRATION
LOCATION
FUNCTION
Include all Assigned
Details
(Learn one)
(Learn one)
Simple Cuboidal
Secretion or
filtration
Simple
Columnar
Lines small
intestine
Secretion or
absorption
Pseudostratified
Ciliated
Columnar
Lines trachea
Secretion &
movement of
mucous
5
Epithelial
Tissue
Connective
Tissue
Stratified
Squamous
Protection
from wear &
tear
Transitional
Stretches
Bone
(Osseous Tissue)
Skeleton
Hyaline
Cartilage
Flexible
attachment,
protection,
growth
Fibrocartilage
Compression
6
Connective
Tissue
Dense Fibrous
Attachment
Areolar
Adipose
Reticular
Supports
Blood
Blood vessels,
heart
chambers
7
Muscular
Tissue
Nervous
Tissue
Skeletal Muscle
Attached to
skeleton
Moves body
or skin
Cardiac Muscle
Moves blood
Smooth Muscle
Moves
substances
Neuron
Brain, spinal
cords, nerves
8
Conducts
impulses