Exam One Flashcards
Four areas of anatomy
Histology
Gross anatomy
Neuroanatomy
Embryology
Skeletal system
Over 200 bones
Give body shape
Protect organs
Bones and joints
Muscular system
Skeletal, smooth, cardiac
Contains muscle that works with skeletal system
Cardiovascular system is made up of these three things?
Heart, vessels, blood
Nervous system made up of?
Brain, spinal cord, cranial nerves, spinal nerves
Regulation system (three systems)
Endocrine, lymphatic, urinary
Endocrine system definition
Series of gland to regulate the body process. Produce and secrete hormones
Lymphatic system
Helps regulate body defences
Urinary system
Kidneys, ureters, bladder, filters waste
Reproductive system
Ovaries, genitals
Infrastructure systems
Skeletal, muscular, cardiovascular, nervous
Energy systems
Respiratory, digestive
Microscopic
Small
Macroscopic
Large
Organization of human body
Chemical
cellular
tissue
organ
organisms system
Chemical level
A molecule is a group of atoms bonded
Cellular level
Cells are the smallest living structures
Tissue level definition
Are similar cells that perform specialized functions
Organ level
Organs are two or more tissues that work together to perform complex functions
Organismal system
All body systems function interdependently in a single living human
Body divisions
Axial and appendicular
Axial region
Forms the main vertical axis of the body includes head, neck, and trunk
Appendicular
Includes the limbs or appendages that attach to the axis
Integumentary system
Makes up our body covering and includes our skin, hair, nails
Dorsal cavity is made up of?
Contains brain and spinal cord
Ventral body cavities
Thoracic
Abdominal-pelvic
Thoracic cavity (three categories)
Three categories
- superior mediastinum
- pericardial
- pleural
The Superior mediastinum contains?
Esophagus and trachea
Pericardial
Heart
Pleural
Lungs
Adomino- pelvic contains?
Abdominal digestive viscera
Pelvic bladder and reproductive organs
Superior meaning
Above or up
Inferior meaning
Below or down
Anterior
Front
Medial
Towards the midline
Posterior
Behind
Lateral
Away from the midline
Proximal
Near or closer to area of origin
Distal
Away or further from area of origin
Superficial
Closer to surface of body
Deep
Further from surface of body
Parietal
Component of body walls, muscle, connective tissue
Visceral
Lines out surface of organs that are located in body cavities
Sagittal plane
Is a vertical plane that divides the body into left and right
Coronal plane
Is a vertical plane that divides the body into anterior and posterior parts
Horizontal plane
Divides the body into superior and inferior planes
Oblique plane
Passes through body at an angle
Longitudinal plane
That is perpendicular to the horizontal plane
Epithelium
Is tissue composed side by side with no intercellular substance
Covering epithelium
Cells that cover the external and internal surfaces
Glandular epithelium
Cells that produce and secrete product aka hormones
Cellularity (epithelial cells)
Adjacent epithelial cells are joined by specialized junctions
Four types of specialized junctions
Tight
Adhering
Desmosomes
Gap
Polarity
Epithelial cell has an exposed surface that faces the exterior of the body or internal space
Attachment (Epithelial cell)
Epithelial cells rest on and are attached to the basal lamina
Avascularity
Epithelial tissue have no direct blood supply
Regeneration
Epithelial cells are renewed continuously
Support and protection
(Epithelium cell)
Epithelium covers and lines external and internal surfaces of body protect tissue
Permeability
Epithelium allows substances to be absorbed into the body
Sensation
Epithelial tissues contain cells to detect sensory stimuli
Secretion
Epithelial secrete substances aka oil, hormones, enzymes
Two types of cell organization
Simple and stratified
Simple cell organization
One layer of cells
Stratified cell organization
Two or more layers of cells
Three type of cell shape
Squamous
Cuboidal
Columnar
Simple squamous
One layer of flattened cells
Found in lining of blood vessel
Simple cuboidal
Consists of single layer of cube like cells
Found in lining of glands
Simple columnar
Consists of single layer of column shaped cells
Ex: lining found in GI tract
Stratified squamous
Multiple layers of flat shaped cells
Ex: make up layer of superficial skin
Stratified cuboidal
Multiple cube like layers
Ex: ducts of glands
Helps with secretion protection
Stratified columnar
Multiple layers of columns shape cells
Ex: male urethra
Transitional cell
Consists of multiple layers of epithelial cells allows stretching
Pseudostratified cell
Comprises only a single layer of cells
Types of connective tissue
Loose
Dense regular
Dense irregular
What does tissue do?
Helps support and protect
Structural framework
Medium exchange
Storage and repair
Defense
Ground substance
Occupies the space between the cells and fibres of connective tissues
Elastic fibres
Thin and branched able to stretch
Collagen fibres
Most common fibre
Are flexible
Reticular fibres
Are thin fibres that form a branching interwoven network with no common alignment
Supporting connective tissue
Bones and cartilage
Specialized connective tissue
Fluid blood lymph
Three types of fibroblasts
Collagen fibres
Reticular fibres
Elastic fibres
What is cartilage
Important structural component of the body
Found in joints, vertebrae, ears, nose, bronchial tubes
Three types of cartilage
Hyaline
Fibrocartilage
Elastic
Hyaline cartilage
Wear resistant tissue to bear and distribute weight
Surface of moveable joints, walls of nose, trachea, ribs
Fibrocartilage
Tough and inflexible
Found in intervertebral discs
Symphysis pubis
Elastic cartilage
More flexible
Found in ear, epiglottis
Perichondrium
(Bone histology)
Dense irregular connective tissue that envelops cartilage to provide nutrients
Lacunae
Small spaces in cartilage that house one or more chondrocytes
Two type of bone composition
Organic and inorganic
Organic bone composition
Makes up 1/3
Ground substance, cells, fibres
Inorganic bone composition
Makes up 2/3
Minerals and salts
Functions of skeletal system
Support, protection, blood cell formation, storage and movement
Two type of bone composition (layer)
Outer cortical layer
Inner cancellous layer
Outer cortical layer
Made up of compact bone hard and strong
Inner cancellous layer
Made up of spongy bone
Four types of bone
Flat bone
Irregular bone
Long bone
Short bone
Axial skeleton made of?
Skull
Vertebral
Ribs
Sternum
Skull: how many bones?
22 bones
Cranial bones
(How many/funcation)
8 bones
Protects brain
How many bones make up Facial bones
14 bones make up face
How many bones in the Vertebral column
Made up 26 bones
24 vertebrae
1 sacrum
1 coccyx
Division of vertebral column
Cervical: 7
Thoracic: 12
Lumber: 5
Sacrum: 5 fused
Coccyx: 4 fused
Atypical vertebrae
C1 always movement yes and no