CAMRT Review: Anatomy And Pathology Flashcards
Planes of the body?
- Sagittal
- Coronal
- Transverse
What cavities are classed as “dorsal” on the body?
- cranial cavity
- spinal cavity/column
What cavities are classed as ventral on the body?
- thoracic cavity
- abdominopelvic cavity
Types of membranes?
- Epithelial
- Connective
Types of epithelial membranes?
- Cutaneous
- Serous
- Mucous
What is classed as a cutaneous membrane?
-skin
Types of serous membranes?
- parietal
- visceral
Where are serous membranes located?
-on surfaces with closed cavities
What are mucous membranes made out of? What kinds of surfaces do they line?
- contain both an epithelial cell and a fibrous/connective tissue layer
- they line body surfaces open to the exterior of the body
- cells secrete mucous
Serous membranes of the thoracic cavity?
- parietal/visceral pleura
- parietal/visceral pericardium
Serous membrane in the peritoneum?
-parietal/visceral peritoneum
Disease classifications? (6)
- Metabolic: throughout the body
- Genetic: hereditary
- Neoplastic: new tissue
- Autoimmune
- Traumatic: accident
- Congenital: born with it
Types of cellular fluid in the body? (3)
- Intracellular: fluid in cells
- Interstitial: in between cells
- Extracellular: interstitial plus blood plasma
Types of human tissue? (4) What do they do for the body?
- Epithelial: nutrients: food and 02
- Connective tissue: structure and safety
- Muscle tissue: movement
- Nervous tissue: thinking and feeling
What type of tissue forms the mucous, serous, and cutaneous membranes in the body?
Epithelial
Does epithelial tissue contain blood vessels? Does it have interstitial fluid?
- contains no blood vessels resulting in a long healing time
- has little or no interstitial fluid
What is the most abundant tissue in the body?
Connective tissue
Connective tissue is largely composed of an _______?
Intercellular matrix
Types of connective tissue? (5)
- Areolar: loose and fibrous: glue that holds the organs together
- Adipose: fat
- Tendons: dense and fibrous
- Bone and cartilage
- Blood and hematopoietic tissue
Types of muscular tissue? (3)
- Skeletal
- Smooth
- Cardiac
What is nervous tissue composed of?
-Neurons and glia
Lobes of the brain?
- Frontal
- Parietal
- Temporal
- Occipital
- Insula (5th lobe inside brain)
Where is the cerebrum located? What is its purpose?
- the outside of the brain
- higher brain functions (reasoning, memory, logic)
What is contained in the diencephalon? What does it do?
- thalamus
- hypothalamus
- pineal gland
-hormones that control body processes
Parts of the brainstem?
- midbrain
- pons
- medulla oblongata
What does the brainstem do?
- relays info by the way of the spinal chord and superior brain
- heart rate, breathing
- vasodilation
Brain structures are protected by what 3 things.
- Calivarium
- Meninges
- CSF
Meninges of the brain?
- Dura
- Arachnoid
- Pia
Where is CSF located?
In the subarachnoid space
What is CSF made from? What makes it?
Made by the choroid plexus in the floor of the 3rd and 4th ventricles
-made from fluid in blood and filters into the subarachnoid space
What is the cerebellum responsible for?
Balance
When you see what structure do you know that you are finished the brain scan?
Cisterna magna
What are gyri?
-folds/bumps of the brain
What are sulci?
-grooves, creases outside of the brain
What is the space between the 2 dura maters called?
Venous sinus
What is hydrocephalus? Radiographic appearance?
“Water on the brain”: abnormal accumulation of CSF in the ventricles of the brain
- appears as dilated ventricles
- may be congenital or acquired
Types of hydrocephalus?
- Communicating: inability to absorb CSF into the venous sinuses or an overproductions of CSF
- Non-communicating: obstruction of the flow of CSF
What can be done to treat hydrocephalus?
-shunt that drains into the peritoneal cavity
What is a concussion? Symptoms?
Temporary loss of normal brain function due to a blunt trauma that bends the brain stem
- can be acute or may appear over days or months
- nausea, vomiting, light sensitivity, vertigo,mood and sleep changes
What is a cerebral contusion?
Bruising of the brain caused by blunt trauma that throws the brain against the rough interior surface of the skull
-edema, swelling, and tissue necrosis
What is the most immediately life threatening hematoma?
Epidural
What is an epidural hematoma? Causes? Radiographic Appearance?
Acute arterial bleed between the dura mater and skull
- usually caused by tear in the middle meningeal artery due to a # in the parietotemporal region of the skull
- causes mass effect
- looks like a lens shape (double convex)
What is the mass effect?
Displacement of brain structures
What is a subdural hematoma?
Venous bleed caused by ruptured veins between the dura and arachnoid mater, associated with a blow to the frontal or occipital bone
- headache, agitation, confusion, drowsiness, gradual neurological deficits
- appears as crescent shaped lesion
What is a subarachnoid hematoma?
Venous bleed into the ventricular system
- may increase intracranial pressure
- can be treated surgically, with drugs, or placement of a catheter
- appears as increased density in the falx cerebri, sub-arachnoid cisterns, or sulci
What is a TIA?
Temporary loss of neurological functions that resolve within 24hrs
Types of CVA?
- Acute ischemic stroke
2. Hemorrhagic stroke
What is an acute ischemic stroke?
Acute brain infarction caused by loss of blood supply to a portion of the brain
-usually caused by atherosclerotic disease of the brain
What is a hemorrhagic stroke?
Ruptured blood vessel in the brain
-usually caused by hypertension, rupture of a berry aneurysm, or AVM
Symptoms of a stroke?
- acute hemiparesis (weakness) /hemiplegia (paralysis)
- difficulty speaking
Clot busting drugs are in-effective _____hrs after initial onset of a stroke?
3
What is an AVM?
Atriovenous malformation
-abnormal communication between an artery and a vein
What is the most common type of primary brain tumour?
Glioma (astrocytoma)
What does a glioma disrupt?
The blood brain barrier
What is meningitis?
Acute inflammation of the pia and arachnoid mater
-bacterial or viral pathogens can spread from the ear, upper respiratory tract, sinuses, blood stream etc.
What type of meningitis is most common?
Bacterial
Symptoms of meningitis?
- acute severe headache
- can be diagnosed with lab test of CSF
- can lead to encephalitis which is life threatening
What are contraindications for a lumbar puncture?
- increased intracranial pressure
- cerebral hemorrhaging
What is spina bifida? Types?
Incomplete closure of the vertebral canal
- Occulta
- Meningocele
- Myelocele
- Myelomeningocele
Parts of an intervertebral disk?
- Annulus fibrosis
2. Nucleus pulposus
Symptoms of a herniated disk?
-sudden sever pain and muscle weakness in upper or lower limbs
What is Parkinson’s caused by?
Inadequate production of the neuro transmitter dopamine
What is the endocrine system?
Cells that produce hormones and release them into the intercellular spaces that are picked up by the blood stream
What is the exocrine system?
Collections are glandular tissue in organs that produce and release non-hormonal substances into ducts
What allow the brain and body to have control over the secretion rates of hormones?
Negative feedback
Where is the pineal gland located?
-the roof of the 3rd ventricle
What does the pineal gland secrete?
Melatonin to regulate sleep/wake patterns
What does the anterior pituitary gland secrete?
- ADH: antidiuretic hormone: stops production of urine
- TSH: thyroid stimulating hormone
- GH: growth hormone
- ACTH: adrenocotropic hormone: stimulates adrenal glands
What is giantism?
Hyperpituitarism before the fusion of the growth plate
What is acromegaly?
Hyperpituitarism after the fusion of growth plates
What do the parathyroid glands secrete?
-PTH: parathyroid hormone: increases blood calcium levels
What does the thyroid gland secrete?
- Thyroid hormone: speeds up cellular metabolism
2. Calcitonin: decreases blood calcium levels
What does the adrenal cortex secrete?
-cortisol: increases blood sugar levels, suppresses immune system, anti-inflammatory
What do the alpha cells of the pancreatic islets secrete?
Glucagon: hyperglycemic: raises blood sugar
What do the beta cells of the pancreatic islets secrete?
Insulin: hypoglycemic: decreases blood sugar
What causes dwarfism in children?
Hypopituitarism
What is the most common cause of dwarfism?
Achondroplasia
- congenital
- inability to convert epiphyseal cartilage to bone