FINAL EXAM STUDY GUIDE Flashcards
Define radiography
- It gives off harmful radiation
- The bone appears white and blocks off the radiation
- The air behind appears black because the radiation can go through it
- And organs appear grey
Contrast medium is used for visualization of hollow organs
Define CT scans
- This still uses radiation
- It uses X rays and a computer generates images of thin slices of the body like a coin
- The computer stacks a series of these images to construct a 3-D image of the body
- It is used to identify tumors, kidney stones, aneurysms, cerebral hemorrhages
DSR ( Dynamic Spatial Reconstructor) produces 3D video images
Define MRI
- There is no exposure to harmful radiation
- Another type of fMRI (functional moment to moment changes in physiology
- It does soft tissue visualization
- You lie in a tube a surround by a powerful electromagnet
Can identify ANYTHING
Define sonography
- No radiation
- Sonogram (obstetrics)
- Echocardiography (beating heart)
- It reflects the ultrasound waves
Second oldest and second widely used method
Define PET scans
- Used to assess the metabolic state of tissue and uses radiation
- It begins with an injection of radioisotopes into patients bloodstream labeled as glucose
- The glucose produces a color image that shows which tissues were using the most glucose
- Damaged tissue consumes little or no glucose and appears dark
- Shows tissue death from heart attack
- It is an example of nuclear medicine use of radioisotopes
What structures are in the axial region?
Head, Neck, Trunk
What structures are in the appendicular region?
Upper limbs, lower limbs, and all the girdles
Where is the epigastric region located?
The upper middle part of the body (stomach)
Where is the Ubmilical region located?
The middle part of the body (the region of the belly button and small intestine)
Where is the hypogastric region located?
The lower middle part of the body (where the reproductive structures are)
Where are the right and left hypochondriac regions located?
Top lateral areas on the trunk area
Where are the left and right lumbar regions located?
middle lateral areas on the trunk area
Where are the left and right Inguinal regions located?
Bottom lateral areas on the trunk area
What are the 2 cavities in the trunk called? And where are they located?
Thoracic cavity (superior part of the trunk)
Abdominopelvic cavity (the inferior part of the trunk
What are the 2 cavities in the Abdominopelvic cavity called? What organs do they contain?
Abdominal cavity (digestive organs, spleen, kidneys ureters)
Pelvic cavity (Distal large intestine, urinary bladder, urethra, reproductive organs)
What is the serous membrane peritoneum and where is it located in the body?
It lines the abdominal cavity and covers the organs in the cavity. It is located in the abdominal cavity
What is the serous membrane Pleura and where is it located in the body?
It surrounds the lungs. It is located in the thoracic cavity
What is the serous membrane Pericardium and where is it located in the body?
It surrounds the heart. It is located in the thoracic cavity
What is the difference between intraperitoneal and retroperitoneal?
Intraperitoneal (the whole organ is covered in peritoneum)
Retroperitoneal (only one side of the organ is covered by peritoneum)
What is the difference between visceral serous membranes and parietal serous membranes?
Visceral (The inner membrane lining the body cavity and attaches to the organ directly)
Parietal (The outer membrane that lines the body cavity wall)
Define the characteristics of epithelial tissues
- held together by cell junctions
- no extracellular matrix
- It covers organs a surfaces and forms glands
- There for protections, secretion, and absorption
- It is avascular
Define the characteristics of connective tissue
- highly vascular
- it is the most abundant tissue in the body
- produce fibers (fibroblasts)
- eat bacteria and debris (macrophages
- Are white blood cells (Leukocytes)
- Produce antibodies (Plasma cells)
- Secrete heparin and Histamine (mast cells)
- have fat cells (adipocytes)
Define the characteristics of muscle tissue
- It contracts and shortens
- It conducts or impulses
- very little extracellular matrix
Define the characteristics of nervous tissue
- It is specialized for communication via electrical and chemical signal
- Neurons (detect stimuli respond quickly and transmit info
- Glial cells (supports the neurons)s
Where in the body does the Simple squamous epithelium surround/belong to in the body? And describe it
Found in the Alveoli/ari sacs, flat one layer of cells, diffuses O2
Where in the body does the Simple cuboidal epithelium surround/belong to in the body? And describe it
Found in the Kidney, Cube like one layer of cells, absorbs and secretes
Where in the body does the Simple columnar epithelium surround/belong to in the body? And describe it
Found in the stomach/small intestine, in columns on layer of cell, has a brush border
Where in the body does the Pseudostratified columnar epithelium surround/belong to in the body? And describe it
Found in the Trachea/lungs, has goblet cells
Where in the body does the Stratified cuboidal epithelium surround/belong to in the body? And describe it
Found in the Sweet gland, ovaries, and testes, Cube like two layers of cells
Where in the body does the Stratified squamous epithelium surround/belong to in the body? And describe it
Found in the esophagus, female reproductive tract, and anal canal , flat two layer of cells,
Where in the body does the Urothelium surround/belong to in the body? And describe it
Found in the Bladder, can stretch
Where in the body does the Stratified columnar epithelium surround/belong to in the body? And describe it
Found in the Salivary duct, pharynx, larynx, & male urethra , In columns two layers of cells
What is hyperplasia?
Tissue growth through cell multiplication
How do tissues grow?
Their cells increase in number or in size
How do skeletal muscles and adipose tissues grow?
Through hypertrophy
What is hypertrophy?
Where cells just get bigger they do not multiply
What is the stratum corneum of the epidermis?
- Keratinized and dead tissue cells
- Stops water loss and penetration
- top layer of the epidermis
What is the stratum lucidum of the epidermis?
- Only found in thick skin
- Cells that lack organelles
- second layer of the epidermis
What is the stratum granulosum of the epidermis?
- Consists of 3 to 5 layers of keratinocytes and some dendritic cells
- They are stained dark
- third layer of the epidermis
What is the stratum spinosum of the epidermis?
- Several layers of keratinocytes
- The thickest layer of the epidermis
- Mitosis takes place here
- Has melanin
- fourth layer of the epidermis
What is the stratum basale of the epidermis?
- Deepest layer
- Only one cell thick
- Mitosis takes place here
Has melanin
What are keratinocyte cells as cells of the epidermis?
- Synthesize keratin
- Cells that die and flake off
What are stem cells as cells of the epidermis?
Undifferentiated cells that divide and give rise to keratinocytes
What are melanocyte cells as cells of the epidermis?
Make melanin (the brown or black pigment)
What are tactile (merkel) cells as cells of the epidermis?
Touch receptors that join with nerves (few of these)
What are dendritic (langerhans) cells as cells of the epidermis
Stand guard against the pathogens
What is the dermis?
- Connective tissue of skin
- Beneath the epidermis
- Has fibroblasts
- Contains smooth muscle
- Fibroblasts are CT cells of the dermis
What is hyaline cartilage?
It is the cartilage at the end of adjoining bones (at the joints)
What is the hypodermis?
- Areolar and adipose tissue just underneath the skin (fat)
- Not a true layer of skin
- Highly vascular
- drugs are injected here
What is osseous tissue?
Essentially it is connective tissue with a hard matrix. it has collagen to help with bending and stress on the bone. It also has minerals to help the bone resist compression.
What is bone marrow and where is it found?
It is found in the medullary cavity of bones. Red bone marrow forms all types of blood cells and yellow bone marrow is fat cells
What is fibrocartilage?
Has collagenous that resist tearing and helps with strength and is found in intervertebral discs. And is in between hyaline cartilage and dense regular CT.
What is appositional growth?
How bones grow in diameter and thickness
What are the organs of the skeletal system?
Bone, Blood, Bone marrow, Cartilage, Adipose tissue, Nervous tissue, Fibrous connective tissue
What is elongated growth?
They grow in length using growth plates
Why do adults have less bones than children do?
Because the bones fuse together so therefore there are less bones.
Define the characteristics of the C1 vertebra
It is a flat bone that does the yes motion and articulates with the occipital bone of the skull
Define the characteristics of the hyoid bone
It is at the base of the tongue and does not articulate with any other bone (it is floating)
What is endochondral ossification?
It is where cartilage is replaced to become bone to form the skeleton
What is the epiphyseal line?
It is the result of the epiphyseal plate that has been ossified
What are the secondary curvatures (lordosis) of the spine?
Cervical and lumbar curvatures that appear after crawling and walking
What is the primary curvature (kyphosis) of the spine?
Thoracic and pelvic curvatures
What is Scoliosis of the spine?
abnormal lateral curvature, most common
What is Hyperkyphosis
(hunchback) of the spine?
Abnormal posterior thoracic curvature
What is Hyperlordosis
(swayback) of the spine?
abnormal anterior lumbar curvature
What are the latin names for Fibrous joints, Cartilaginous joints, Bony joints, and Synovial joints?
Fibrous joints- Synarthrosis
Cartilaginous joints- Amphiarthrosis
Bony joints- Synostosis
Synovial joints- Diarthrosis
What are fibrous joints?
- Joints that are united by fibrous tissue
Have little to no movement
What are cartilaginous joints?
- Bones are linked by cartilage
- little movement
What are bony joints?
- Immovable joints that form when the gap between two bones ossifies
- only in the cranium
What are synovial joints?
- they are joints that move
- they are joints in the elbow and knees and knuckles
What are sarcolemma?
- This forms tunnels called transverse tubules (t) tubules
- The t-tubules carries electrical signals from the cell surface into the interior which causes the sarcoplasmic reticulum to open
What is the sarcoplasmic reticulum?
- This is a place where fluid collects for Ca2+
- The Ca2+ activates muscle contraction
What are terminal cisterns?
- Is part of the SR and they are dilated end sacs
They are calcium storage site
What are sarcoplasm?
- Is the cytoplasm in a muscle fiber
- This contains glycogen ( a carb that provides energy for the cell)
- And it also contains myoglobin ( a red pigment which provides some of the oxygen)
What is the sarcomere?
- A segment of myofibril
- The sarcomere is the contractile unit of the muscle fiber (the functional subunit)
- it shortens during contraction
What are myofilaments?
- Fibrous protein strands that carry out the contraction process
- The three kinds of myofilaments are thick (myosin), thin (actin), and elastic
What are thick myofilaments?
- Made of several hundred molecules of a motor protein called myosin
- Other word for it is myosin
- Looks like a golf club
What are thin myofilaments?
- Composed of intertwined strands of protein called ACTIN or FIBROUS ACTIN
- Looks like a necklace
What is the difference between tropomyosin and troponin
Tropomyosin- large strand that goes around the actin
Troponin- It is attached to the tropomyosin and binds to calcium when excited
What is the G region in the trorpomyosin?
It binds to the head of the thick myofilament
What are elastic filaments?
- It goes through the core of a each thick filament (myosin) and anchors tit to structures called the z discs
- They stabilize the myofilaments
Why do muscles shorten?
Because their individual sarcomeres shortens
Define the characteristics of skeletal muscles
Voluntary movement, is striated, and attach to bone
Define the characteristics of cardiac muscles
Involuntary movement, striated, they cannot regenerate easily
What is a second class lever?
The fulcrum is on one end effort is on the other end and the resistance is in the middle
Define the characteristics of smooth muscles
- Involuntary movement
- Nonstriated.
- Fusiform cell shape.
- Tapered at ends.
What is a first class lever?
The fulcrum is in the middle and the effort and resistance is on either side
What is a third class lever?
The fulcrum is on one end and the resistance is on the other end and the effort is in the middle
What happens when the MA value of a lever is greater than 1.0?
the lever produces more force but less speed or distance
What happens when the MA value of a lever is less than 1.0?
the lever produces more speed or distance but less force
What does HA and LA equal to?
HA- High power, lower speed
LA = Low power, high speed
What is the direct attachment of muscle-bone attachment?
Close association with bone, little separation between bone and muscle
What is the indirect attachment of the muscle-bone attachment?
The muscle ends short of the bony destination, Tendon attaches muscle to bone
What are Oligodendrocytes as glial cells in the CNS?
- It makes myelin in CNS
- Forms myelin in brain and spinal cord
What are Ependymal cells as glial cells in the CNS?
They line the internal cavities of the brain and spinal cords. Similar to cuboidal epithelium
What are Microglia cells as glial cells in the CNS?
They are basically white cells that go through the CNS looking for debris or other problems and get rid of those problems
What are Astrocytes as glial cells in the CNS?
- Most abundant cell in the CNS
- They provide support and nourishment for neurons
What are schwann cells as glial cells in the PNS?
- Forms a sheath around the nerve fibers of the PNS
- They assist in conduction in PNS cells and regeneration of damaged nerve fibers
What are Satellite cells as glial cells in the PNS?
- Provide support and nourishment
- They surround somas of neurons in the ganglia
Define the term neuron
Carry out the system’s communicative role
What are the properties that a neuron does? And describe them
Excitatory- All cells respond environmental changes
Conductive- responds to stimuli by producing electrical signals
Secretion- When the electrical signal reaches the end of a nerve fiber it secrets a chemical called the neurotransmitter
What are Sensory (Afferent) Neurons?
convey info to the CNS
What are Interneurons?
always lie within CNS
What are Motor (Efferent) Neurons?
send signals to muscles and
glands (effectors)
What type of nerve are spinal nerves?
They are mixed nerves, they do sensory and motor stuff
What do spinal nerves create when they come together?
- When spinal nerves come together they create a posterior and anterior ramus
Where is the phrenic nerve located?
In the cervical plexus C1 to C5
Why is the phrenic nerve so important?
It plays an essential role in breathing
Where is the cervical plexus located
Located in the neck C1-C5
Where is the brachial plexus located and define the general anatomy
Located in the shoulder, C5-C6 form the superior tunk, C7 forms the middle trunk, C8 to T1 from the inferior trunk
Where is the lumbar plexus located and define the general anatomy
Located in the lower back, formed by anterior rami of nerves L1 to L5, have 5 roots and 2 divisions
Where is the sacral plexus located and define the general anatomy
Located below the lumbar, formed by anterior rami of nerves L4, L5
and S1 through S4
Where is the coccygeal plexus located and define the general anatomy
Located in the lower sacrum and coccygeal, formed by anterior rami of S4, S5, and Co1
What are the different components of the of the midbrain?
- metencephalon
- myelencephalon
- medulla oblongata
- pons
- cerebellum
What is the medulla oblongata responsible for as part of the midbrain?
Responsible for regulating the most basic functions of life:
blood pressure, breathing, and heart rate
What does the midbrain become?
The mesencephalon
What are the three divisions of the forebrain?
-Thalamus
- Hypothalamus
- Epithalamus
Define the thalamus
involved in sensory processing
and in the memory and emotional functions of the limbic system
Define the hypothalamus
Major control center of the autonomic nervous system and endocrine system
Define the epithalamus
The epithalamus is a very small mass of tissue composed mainly of the pineal gland
Define the lateral ventricles and state how many there are in the body
- There are 2
- Largest; form an arc in each cerebral hemisphere; interventricular foramen
connects lateral ventricles to third ventricle
Define the fourth ventricles and state how many there are in the body
- There are 1
- Between pons and cerebellum; forms the
central canal which extends through the
medulla oblongata into the spinal cord
Define the third ventricles and state how many there are in the body
- There are 1
- A canal called the ‘cerebral aqueduct’
passes down the core of midbrain and
leads to fourth ventricle
What is the brain barrier system?
strictly regulates what substances get from the bloodstream TO THE brain TISSUE
What is the Blood–CSF barrier as another component of the brain barrier system?
- Seals nearly all of the blood capillaries throughout the brain tissue.
- Astrocytes stimulate the formation of tight junctions BETWEEN endothelial cells
What are the main differences of the sympathetic and parasympathetic nervous systems?
Sympathetic - This is the flight or fight nervous system. It reduces blood flow to the skin and digestive tract, increases blood glucose and heart rate, pupils dilate, and decreases digestion and waste elimination.
Parasympathetic - It is the calming effect on many body functions. “rest and digest”. Decreases heart rate and stimulate (increases) digestion and waste elimination.
Compare and contrast the sympathetic and parasympathetic systems based on what they do to a certain region of the body.
The eye
Parasympathetic- Constricts pupil
Sympathetic- Dilates pupil
Compare and contrast the sympathetic and parasympathetic systems based on what they do to a certain region of the body.
salivary gland
Parasympathetic- Stimulates salivary gland secretion
Sympathetic- Inhibits salivary gland secretion
Compare and contrast the sympathetic and parasympathetic systems based on what they do to a certain region of the body.
lungs
Parasympathetic- Constricts bronchi in lungs
Sympathetic- relaxes bronchi in lungs
Compare and contrast the sympathetic and parasympathetic systems based on what they do to a certain region of the body.
Heart
Parasympathetic- slows heart
Sympathetic- accelerates heart