Block 1 Chart From Big (up To Section 4) Flashcards
6 causes of congenital anomalies
- genetics
- prenatal infection
- hormones
- vitamin deficiencies
- exposure of fetus to poisons ingested by mother
- parental injury
Aplasia (agenesis)
- cells revert to primitive stages and lose specialization and organization
Dysplasia
Abnormal growth/dev. of organ/part
Anatomic diagnosis
Based on nature and location of lesion
Etiologic diagnosis
- based on basis of the cause
Definitive diagnosis
- based on basis of specific entity involved
Clinical diagnosis
- based on clinical signs seen in live animal
Pressure usually results in what kind of injuries
- mild
- dev. over long time pds
Stenosis
Narrowing of hollow organs
Stricture
Contraction of fibrous CT in organ wall
Effects of electrical injuries
- edema
- hemorrhage
- somatic death due to cardiovasc. & resp. function interference
- burning of tissue
Volvulus
Rotation around base of mesentery
Torsion
Rotation around long axis
Prolapse
Organ pops out natural/artificial orifice
Hernia
Organ pops out natural orifice, but covered w/ skin
Lesions (4) prod. by burns
- blisters
- reddening of tissue
- transepidermal death of cells/ necrosis
- charring
Radiation
- prod. by Ionizing irradiation
- damage extent depends on type, route, and amt. exposure
Light lesions
- sunburn not common in animals
- photosensitization seen
- incandescent light can cause
Photosensitization
- damage of skin due to sunlight causing melanin to produce free radicals
Metaplasia
- one type of cells are replaced with another
Atrophy
Decrease in cell size
Hypertrophy
Increase in cell size
Hyperplasia
Increase in cell #
Serous atrophy of fat
Decrease in amount of fat cells in body depos
Fibrous atrophy
Fibrous CT fills gaps left by dead cells
Acanthosis
Increase in thickness of stratum spinosum
Hyperkeratosis
Increase in thickness of cornified layer of skin
Lymphoid hyperplasia
Increase in lymphoid tissue
Myeloid hyperplasia
Fatty bone marrow -> normal red bone marrow
Nodular hyperplasia
Increase in cell # at a specific location in an organ
Hereditary anomaly
- origin. germ cells
- from parent -> offspring
Congenital anomalies
Born w/ it; can be genetic or non-genetic
Aplasia
Failure to grow
Ex. of aplasia/hypoplasia anomaly
Failure of CN II to develop
3 anomalies that occur due to failure of parts to coalesce/close
- Cleft palate
- ventricular septal defects
- patent foramen ovale
2 anomalied created due to persistence of vestigial structures
- meckel’s diverticulum
- ductus arteriosus
2 Anomalies due to duplications, supernumerary, or accessory parts
- polydactyly
- cranioschisuis
2 lesions caused byh ectopic/hetreotopic parts
- heart outside thorax
- pancreatic tissue in stomach wall
2 anomalies related to skeletal dev. issues
- dwarfism
- chondrodysplasia