Test 1 (Lectures 1-4) COPY Flashcards
what is physiology
the relationship of form (appearance) and function (action).
what is unique about dog vs cat hearts
dogs have a much larger heart than cats
what does the larger heart in the dog allow
higher level of endurance
what does the cardiovascular /circulatory system do
Circulatesbloodaround the body via theheart,arteriesandveins, deliveringoxygenand nutrients to organs and cells and carrying their waste products away.
what does the Digestive system/Excretory system do
Mechanical and chemical processes that provide nutrients via themouth,esophagus,stomachandintestines.
Eliminates waste from the body.
what does the Endocrine system do
Provides chemical communications within the body usinghormones
what does the Integumentary system/Exocrine system include (5)
Skin hair nails sweat other exocrine glands
what does the lymphatic system do
The system comprising a network of lymphatic vessels that carry a clear fluid calledlymph
what does the immune system do
Defends the body against disease-causing agents
what does the muscular system do
Enables the body to move usingmuscles
what does the nervous system do
Collects and processes information from thesensesvianervesand thebrainand tells themusclesto contract to cause physical actions.
what does the renal/urinary system do
The system where thekidneysfilter blood
what does the reproductive system do
Thesex organsrequired for the production ofoffspring
what does the respiratory system do
Thelungsand thetracheathat bring air into the body
what does the skeletal system do
Bonessupporting the body and itsorgans.
what does the sagittal plane divide
left and right
what does the transverse plane divide
front and back
2 other names for frontal plane
- dorsal
- coronal
what does the frontal plane divide
divides top and bottom
directional terms: cranial
towards the head
directional terms:
Rostral
towards the nose (head only)
directional terms: Caudal
towards the tail
directional terms:
Dorsal
toward the back
directional terms:
Ventral
toward the belly
directional terms:
Medial
towards the middle
directional terms:
Lateral
away from the middle (outside)
directional terms: Proximal
towards the trunk
directional terms:
Distal
away from the trunk
directional terms: dorsal (foot/paw)
front of paw
directional terms: palmer (foot/paw)
back of fore limb paw
directional terms: planter (foot/paw)
back of rear limb paw
what does the dorsal body cavity contain (3)
brain spinal cord (CNS) vertebrae
what does the ventral body cavity include (what other 2 cavity’s)
- chest (thoracic cavity)
- abdomen (abdominal cavity)
what does the ventral body cavity contain
contains the soft organs or viscera
what is in the pleural cavity
heart, lungs, and associated blood vessels
what covers the organs of the thoracic cavity
membrane of pleurem
what membrane similar to the pleurem covers covers the abdominal organs
peritoneum
what is the second layer that covers both the thoracic and abdominal cavities called
parietal
what is Pleuritis
inflammation of the pleurum
what is peritonitis
Inflammation of the peritoneum
first hardest substance in the body
enamel
second hardest substance in the body
bone
what is bone
Living tissue composed of cells and a soft matrix that hardens when deposits of calcium and phosphate are “laid down”
what are Bone producing cells called
osteoblasts
what do the osteoblasts do
cells are responsible for the secretion of the bone matrix (bone building)
what is the matrix
a mixture of collagen fibres and a protein/carbohydrate complex
what is Endochondral ossification
cartilage replacement
is Endochondral ossification common
yes
what happens during Endochondral ossification
occurs when cartilaginous templates (rods of cartilage) are substituted by bone
when does Endochondral ossification normally take place
in fetal development
where does bone typically develop first
along the shaft (middle)
what is the name of the process when bone develops on the shaft
diaphysis
after bone develops completely on the shaft where does it develop next and what is that called
- at the ends of the bone
- epiphysis
where does intramembranous ossification mostly take place
brain
what kind bone does intramembranous ossification form
- form the bones of the skull
- skull plates
what kind of bone do Both endochondral and intramembranous ossification produce
immature bone
what are the functions of bones (5)
- Support of soft tissue and organs
- Protection of vital tissue and organs
- Leverage and actuation
- Storage
- Blood cell formation
name 2 bones that protect vital organs
ribs
skull
name a mineral that bones store
calcium
what do bone allow to attach to them
attachment points for tendons and muscles
what is Calcitonin
a thyroid hormone
what does Calcitonin do
it deposits calcium in the bone
what does the Parathyroid hormone do
removes calcium from the bone
what 2 hormones control calcium levels
- Calcitonin
- Parathyroid
describe cancellous bone
light and spongy
describe compact bone
dense and heavy
what can be seen in cancellous bone
Tiny “spicules” of bone that appear randomly arranged
where can bone marrow be found in cancellous bone
Spaces between the spicules
cancellous bones are _____ but _____
strong
light
where is compact bone deposited
areas requiring greater strength
where can compact bone be found
- Shafts of long bones (limbs)
- outside layer of all bones
what membrane covers the bone
periosteum
where is the periosteum not found
on articular surfaces
what is the outer layer of periosteum composed of
fibrous tissue
what is the inner layer of the periosteum called
endosteum
what does the endosteum contain and why
contains osteoblasts
– for increasing bone width and fracture repair
what do Osteoclasts do (3)
- break down bone
- release calcium
- remove/remodel
what are Mature osteoblasts which no longer produce bone called
osteocytes
what is unique about osteocytes
depending on the need, they can revert back to Osteoblasts
what are foramina
large channels found in large bones
what do foramina do
increase -blood -lymph -nerve supply to the bone tissue
what can foramina be possibly found on
radiograph
what are Pneumatic bones
hollow bones found in birds
4 basic bone shapes
- long
- flat
- long
- irregular
what is a long bone
a bone thats Longer than it is wide
long bone example
femur
humerus
what is a short bone
a bone that is Short, kind of block like
short bone example
- carpal
- tarsal
what is a flat bone
a bone that is flat and thin
flat bone example
- Pelvis
- Scapula
irregular bone examples
- Vertebrae
- Maxilla (upper jaw)
- Mandible (lower jaw)
- Sacrum (tailbone)
what in general does bone marrow do
Fills the spaces within bones
types of bone marrow (2)
- red
- yellow
what is haematopoiesis
blood production
what types of animals have lots of red marrow
Predominant in young animals
what is red marrow responsible for
all blood cell formation
what do red blood cells do
carry oxygen
what do white blood cells do
get rid of bacteria, viruses
what do platelets do
clot blood
where can red marrow be found in older animals
normally confined to the ends of long bones and in larger bones such as the pelvic and breast bone (sternum)
what type of animals have lots of yellow bone marrow
adult animals
what does yellow bone marrow contain
connective tissue
adipose (fat)
what is the condyle
round articular surface
what is the hard of the bone
spherical articular surface on the proximal end of a long bone