Human Anatomy Lecture Exam 1

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183 Terms

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Body Cavities
Cavities that are filled with organs
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What body cavities are part of the ventral body cavity?
Thoracic and abdominopelvic
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Serous Membranes
Provide lubrication to organs
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What are the components of the thoracic cavity?
Pericardial cavity, mediastinum, pleural cavity
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Thoracic Cavity
Surrounded by chest wall and diaphragm
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Pleural Cavity
Surrounds each lung
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Mediastinum
Trachea, esophagus, major vessels
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Pericardial Cavity (Cadiac)
Surrounds heart
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What are the components of the abdominopelvic cavity?
Abdominal, pelvic, and peritoneal cavities
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Abdominal Cavity
Digestive glands/organs
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Pelvic Cavity
Bladder, reproductive organs, lower GI tract
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Peritoneal Cavity
Mesenteries
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Mesenteries
Double sheets of peritoneum that SUSPEND digestive organs, provide blood supply, support, and stability
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Visceral
Organs; inner membrane
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Parietal
Cavity; outer membrane
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Types of Serous Membranes
Pleural, pericardial, peritoneal
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Sagittal Plane
Left/right
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Transverse Plane
Superior (up)/inferior (down)
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Coronal (Frontal) Plane
Ventral (anterior/front)/dorsal (posterior/back)
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Two Parts of Metabolism
Anabolism and catabolism
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Catabolism (catastrophe)
Metabolic processes that TEAR DOWN biomolecules
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Anabolism (steroids)
BUILD UP molecules
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Hypertrophy
Increases in size of cells
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Hyperplasia
Increase in \# of cells
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What two processes mean growth in cells?
Hypertrophy and hyperplasia
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Differentiation
Cells become specialized
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Passive Membrane Transport
High to low, no energy
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Active Transport
ATP, low to high, "push uphill" (against gradient)
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Which two membranous organelles have a double membrane?
Nucleus and mitochondrion
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Transmission Electron Graph
View internal structures
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Scanning Electron Micrograph
View fine surface detail
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Mitochondria
Site of ATP synthesis
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Endoplasmic Reticulum (ER)
Synthesizes, modifies, and packages
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Rough ER
Ribosomes attached; Modifies and packages proteins
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Smooth ER
No ribosomes; makes lipids, steroids, and carbs; storage of Ca2+
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Golgi Apparatus
Synthesis/packaging of secretions
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4 Types of Tissues
Epithelial, connective, muscular, neural
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Epithelial Tissue
No intracellular space, covers exposed surfaces, physical protection, sensory, secretions
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Connective Tissue
Most abundant, bind/hold together
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Muscular Tissue
Produce movement, skeletal/cardiac/smooth muscle
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Neural Tissue
Conducts electrical impulses, carries info
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Simple Epithelium
Single layer, reduces friction, absorbs/secretes
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Three Types of Simple Epithelium
Squamous, cuboidal, columnar
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Stratified Epithelium
2 or more layers, physical barrier
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Three Types of Stratified Epithelium
Squamous, cuboidal, columnar
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Exocrine Glands
Ducts to an epithelial surface
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Endocrine
Ducts to ECF -\> bloodstream or lymph
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Eccrine
Exocytosis, continuous, fastest secretion
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Exocytosis
Packaged into secretory vesicles then released onto surface of cell
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Apocrine
Apical portion is shed, non-continuous, production in waves, top portion sheds to release product
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Holocrine Secretion
Entire cell becomes packed then bursts -\> secretion is released -\> cell dies; typically oily, slowest production
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Connective Tissue Proper
Matrix of loose/dense fibers
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Fluid Connective Tissue
Watery matrix of dissolved proteins (blood/lymph)
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Supporting Connective Tissue
Dense matrix of fibers; may have insoluble calcium salts
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Fibers of Connective Tissue Proper
Collagen, reticular, elastic
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Collagen Fibers
High tensile strength; tendons/ligaments
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Reticular Fibers
Structural mesh within organs
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Elastic Fibers
Protein called elastin; "rubbery"
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Ground Substance
Thick syrupy consistency; mix of proteins/carbs
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Areolar Connective Tissue
"Stuffing"; cushions/supports
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Adipose Connective Tissue
Padding, stores energy, white/brown fat
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Reticular Connective Tissue
"Structural sponge", support
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Dense Regular Connective Tissue
Firm attachment
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Dense Irregular Connective Tissue
Strength to resist force from multiple directions
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Elastic Tissue
Stabilize positions of vertebrae/penis
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What system does blood move through?
Cardiovascular
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What system does lymph move through?
Lymphatic
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Erythrocytes
Red blood cells, gas transport
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Leukocytes
White blood cells, immune function
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Thrombocytes
Platelets, blood clotting
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Plasma
Matrix
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Cartilage
Supporting connective tissue
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What is cartilage made of?
Chrondocytes
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Hyaline Cartilage
Provides stiff yet flexible support
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Elastic Cartilage
Most flexible, provides support, tolerates distortion
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Fibrous Cartilage
Firmest, resist compression, prevent bone-to-bone contact
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What are external bone surfaces covered with?
Periosteum
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What are internal bones covered in?
Endosteum
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Compact Bone
Blood vessels in matrix
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Spongy Bone
Blood vessels not in matrix
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What resides in lacunae?
Osteocytes
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Mucous Membrane Functions
Produce mucin, keep surfaces moist, chemical protection
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Serous Membrane Functions
Produce transudate to reduce friction
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Stratified Squamous Epithelium Function
Produce high amounts of keratin, reduce water loss, protect against physical damage/pathogens
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Synovial Membrane Functions
Produce synovial fluid, reduce friction, no basal lamina/reticular lamina, gaps
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Muscular Tissue Functions
Contracts to produce movement
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Skeletal Muscle Tissue
Moves/stabilizes position of skeleton
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Smooth Muscle Tissue
Moves food, urine, reproductive tract
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Cardiac Muscle Tissue
Circulates blood, maintains BP
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Nervous Tissue
Neurons and neuroglia
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Neuroglia
Supporting cell of neural tissue, can divide
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Neuron
Specialized to conduct electrical signal
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Axon
Transmits a signal, action potential
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Dendrites
Receive stimuli
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Integumentary System
Most visible/largest organ system, has all tissue types
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Epidermis consists of:
Keratinocytes, melanocytes, merkel cells, langerhans cells
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Keratinocytes
Most common, produce keratin
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Melanocytes
Pigment, produce melanin
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Merkel Cells
Sensory cells
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Langerhans Cells
Wandering macrophages