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Musculoskeletal System
part of test 1
122
Agriculture
Undergraduate 2
02/01/2017

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Term
some differences between the avian and mammalian skeletons
Definition
-Coracoids – a pair of bones that aid in wing movement and supplies additional support of shoulder joint,
-Cervical vertebrae (neck bones) – for an “S” shape, which are designed to minimize landing impact stresses on the head. the S shape provides more moveability
-Spinal vertebrae – are fused to add support for wing movement
birds have 1 occipital condile
-Bones of birds are also lighter in weight than in mammals,
-Some of the bones are hollow and actually act as part of the avian respiratory system. They are called pneumatic bones (New-Matic) and include the skull, humerus, clavicle, keel (sternum), pelvic girdle, and the lumbar and sacral vertebrate.
-Another important type of bone in the avian skeleton are medullary (Med-ULarry) bones. These include the tibia, femur, pubic bone, ribs, ulna, toes and scapula. Medullary bones are an important source of calcium when hens are laying eggs. The medullary bone is estrogen dependent.
Term
Coracoids
Definition
a pair of bones that aid in wing movement and supplies additional support of shoulder joint
Term
cervical vertebrae
Definition
neck bones
Term
how the cervical vertebrae (neck bones) are in birds
Definition
they have an “S” shape, which is designed to minimize landing impact stresses on the head. The S shape provides more moveability.
Term
how the spinal vertebrae are in birds
Definition
they are fused to add support for wing movement
Term
humans vs. birds: occipital condiles
Definition
humans have 2 and birds have 1
Term
humans vs. birds: weight of bones
Definition
Bones of birds are also lighter in weight than in mammals
Term
pneumatic bones
Definition
bones that are hollow and actually act as part of the avian respiratory system
Term
some pneumatic bones in birds
Definition
-skull
-humerus
-clavicle
-keel (sternum)
-pelvic girdle
-lumbar vertebrae
-sacral vertebrate
Term
medullary bones
Definition
an important source of calcium when hens are laying eggs. The medullary bone is estrogen dependent.
Term
medularry bones are dependent on...
Definition
estrogen
Term
some bones that are considered medullary bones
Definition
-tibia
-femur
-pubic bone
-ribs
-ulna
-toes
-scapula
Term
Medullary bones form in egg laying birds in response to...
Definition
gonadal steroids
Term
What stimulates the production of medullary bone?
Definition
estrogen
Term
which bone is number 1?
[image]
Definition
incisive
Term
which bone is number 2?
[image]
Definition
nasal
Term
which bone is number 3?
[image]
Definition
lachrymal
Term
which bone is number 4?
[image]
Definition
quadrate
Term
which bone is number 5?
[image]
Definition
occipital
Term
which bone is number 6?
[image]
Definition
mandible
Term
which bone is number 7?
[image]
Definition
atlas
Term
which bone is number 8?
[image]
Definition
epistropheus
Term
which bone is number 9?
[image]
Definition
phalanges
Term
which bone is number 10?
[image]
Definition
metacarpus
Term
which bone is number 11?
[image]
Definition
carpus
Term
which bone is number 12?
[image]
Definition
ulna
Term
which bone is number 13?
[image]
Definition
radius
Term
which bone is number 14?
[image]
Definition
humerus
Term
which bone is number 15?
[image]
Definition
scapula
Term
which bone is number 16?
[image]
Definition
unciate process
Term
which bone is number 17?
[image]
Definition
ilium
Term
which bone is number 18?
[image]
Definition
vertebral rib
Term
which bone is number 19?
[image]
Definition
pygostyle
Term
which bone is number 20?
[image]
Definition
ischium
Term
which bone is number 21?
[image]
Definition
pubis
Term
which bone is number 22?
[image]
Definition
femur
Term
which bone is number 23?
[image]
Definition
fibula
Term
which bone is number 24?
[image]
Definition
clavicle
Term
which bone is number 25?
[image]
Definition
coracoid
Term
which bone is number 26?
[image]
Definition
sternal rib
Term
which bone is number 27?
[image]
Definition
sternum
Term
which bone is number 28?
[image]
Definition
patella
Term
which bone is number 29?
[image]
Definition
tibia
Term
which bone is number 30?
[image]
Definition
hock joint
Term
which bone is number 31?
[image]
Definition
metatarsus
Term
which bone is number 32?
[image]
Definition
phalanges
Term
some
Definition
-Epiphysis
-Diaphysis
-Spongy
-Compact
Term
Epiphysis
Definition
the end of the bone where growth occurs
Term
Diaphysis
Definition
central hollow region in bones
Term
Spongy
Definition
has passages for capillaries and nerves; this type of bone is home to bone marrow
Term
the type of bone that has bone marrow
Definition
spongy
Term
which part of the femur is number 1?
[image]
Definition
femur
Term
which part of the femur is number 2?
[image]
Definition
articular cartilage
Term
which part of the femur is number 3?
[image]
Definition
spongy bone
Term
which part of the femur is number 4?
[image]
Definition
space containing red marrow
Term
which part of the femur is number 5?
[image]
Definition
compact bone
Term
which part of the femur is number 6?
[image]
Definition
medullary cavity
Term
which part of the femur is number 7?
[image]
Definition
yellow marrow
Term
which part of the femur is number 8?
[image]
Definition
periosteum
Term
which part of the femur is number 9?
[image]
Definition
epiphysial disks
Term
which part of the femur is number 10?
[image]
Definition
proximal epiphysis
Term
which part of the femur is number 11?
[image]
Definition
diaphysis
Term
which part of the femur is number 12?
[image]
Definition
distal epiphysis
Term
which part of the bone is number 1?
[image]
Definition
femur (long bone)
Term
which part of the bone is number 2?
[image]
Definition
bone marrow
Term
which part of the bone is number 3?
[image]
Definition
spongy bone
Term
which part of the bone is number 4?
[image]
Definition
compact bone
Term
which part of the bone is number 5?
[image]
Definition
Haversian canal
Term
which part of the bone is number 6?
[image]
Definition
osteocyte
Term
which part of the bone is number 7?
[image]
Definition
blood vessels
Term
which part of the bone is number 8?
[image]
Definition
periosteum
Term
What is cage layer fatigue?
Definition
-occurs in prolific hens kept in battery cages.
-The disease is typified by muscular paralysis and severe osteoporosis.
-Caused by excessive calcium depletion.
Term
what causes cage layer fatigue?
Definition
excessive calcium depletion
Term
cage layer fatigue aka...
Definition
osteoperosis
Term
what are rickets?
Definition
-Growing bones fail to calcify normally
-birds are retarded in growth, unthrifty and often unable to walk
-Can be caused by deficiency in vitamin D, calcium, and/or phosphorus.
Term
what causes rickets?
Definition
Can be caused by deficiency in vitamin D, calcium, and/or phosphorus
Term
what do muscles do?
Definition
-Movement – many work by themselves, many in pairs
-Heat – regulate body temperature; this is produced by metabolism
-Shape and form – surround, cover and protect bones, organs, etc.
-muscles attach to bones by tendons
Term
how muscles function in movement
Definition
many work by themselves, many in pairs
Term
how muscles function in heat
Definition
regulate body temperature; this is produced by metabolism
Term
what causes muscles to produce heat?
Definition
metabolism
Term
how muscles function in shape and form
Definition
surround, cover and protect bones, organs, etc.
Term
muscles attach to bones by...
Definition
tendons
Term
the 3 different types of muscles
Definition
-smooth
-cardiac
-skeletal (striated)
Term
some types of smooth muscles
Definition
-blood vessels
-gizzard
-intestines
-organs
-repro tract
Term
smooth muscles are controlled by...
Definition
the autonomic nervous system (ANS), which is the part of the nervous system that performs functions without you even thinking
Term
something smooth muscles are able to do
Definition
smooth muscles are able to expand and still be able to contract
Term
some functions of smooth muscle
Definition
-autonomic
-blood vessels
-repro
-respiritory
-digestive tract
Term
the type of muscle in gizzard
Definition
gizzard has mix of skeletal and smooth
Term
cardiac muscle
Definition
specialized heart muscle
Term
some features of the cardiac (heart) muscle
Definition
-has its own pacemaker
-has gap junctions
-in heart attack, the heart muscles are off sequence
-gap junctions allow heart muscles to act as a single unit; synsacum (did I spell that right?)
Term
the type of junctions in cardiac (heart) muscles
Definition
gap junctions
Term
something about the heart muscles in heart attack
Definition
in heart attack, the heart muscles are off sequence
Term
the importance of gap junctions in cardiac (heart) muscles
Definition
gap junctions allow heart muscles to act as a single unit; synsacum
Term
Skeletal (striated) muscles
Definition
muscle responsible for voluntary movement and body shape. Attached to bones by tendons.
Term
skeletal (striated) muscles attached to bones by...
Definition
tendons
Term
peristalsis
Definition
the smooth muscle contraction that moves bolus down digestive tract; bolus is the stuff you’re gonna find thru your stomach
Term
bolus
Definition
bolus is the stuff you’re gonna find thru your stomach
Term
the function of tendons
Definition
to attach muscles to bones
Term
role of the pectoralis minor in flight
Definition
pulls wings up
Term
role of the pectoralis major in flight
Definition
pulls wings down
Term
the two main proteins involved in muscle contraction
Definition
-actin
-myosin
Term
sarcomere
Definition
the functional unit of muscle; it’s basically 2 strands of myosin that “sandwich” actin
Term
how Calcium and ATP are needed for muscle contraction
Definition
-Ca needed to allow myosin to bind with actin, to form crossbridge
-Ca energizes the cell
-Ca stored in sarcoplasmic reticulum until muscle fiber is depolarized
-ATP needed to cause the shortening and power stroke
Term
______ is needed to allow myosin to bind with actin, to form crossbridge
Definition
Ca
Term
______ energizes the cell
Definition
Ca
Term
______ stored in sarcoplasmic reticulum until muscle fiber is depolarized
Definition
Ca
Term
Ca stored in ______ until muscle fiber is depolarized
Definition
sarcoplasmic reticulum
Term
Ca stored in sarcoplasmic reticulum until ______
Definition
muscle fiber is depolarized
Term
the role of ATP in muscle contraction
Definition
ATP needed to cause the shortening and power stroke
Term
some differences between white and dark meat
Definition
White meat – flight muscles, short bursts of movement (equivalent to your type 2 muscle; they allow for strong, powerful movement, but they’re more prone to fatigue), less myoglobin, fewer blood vessels, less fat, less color

Dark meat – leg muscles, longer usage, more continuous usage, more myoglobin (lota like hemoglobin due to Fe containing heme groups that bind to O; this is a reservoir for O), more blood vessel, more fat, more color, has high aerobic capacity, has higher capillary profusion, birds that fly more have dark meat in their breast
Term
White meat
Definition
-flight muscles
-short bursts of movement (equivalent to your type 2 muscle; they allow for strong, powerful movement, but they’re more prone to fatigue)
-less myoglobin
-fewer blood vessels
-less fat
-less color
Term
Dark meat
Definition
-leg muscles
-longer usage
-more continuous usage
-more myoglobin (lota like hemoglobin due to Fe containing heme groups that bind to O; this is a reservoir for O)
-more blood vessel
-more fat
-more color
-has high aerobic capacity
-has higher capillary profusion
-birds that fly more have dark meat in their breast
Term
myoglobin
Definition
iron- and oxygen-binding protein found in muscle tissue
Term
Why does green muscle disease occur in broilers?
Definition
The green color is produced by the breakdown of hemoglobin and myoglobin to bile salts.
Term
What are some measures that can be taken to reduce green muscle disease?
Definition
measures to reduce wing flapping, such as...
-reduce amount of entry/exit in house
-look for stressful stimuli
Term
some measures to reduce wing flapping
Definition
-reduce amount of entry/exit in house
-look for stressful stimuli
Term
What causes Pale Soft Exudative (PSE) in broiler meat?
Definition
the pH of the meat dropping too quickly
Term
[image]
Definition
normal chicken breast on left, one affected by Pale Soft Exudative (PSE) on right
Term
what a chicken breast with Pale Soft Exudative (PSE) looks like
Definition
[image]

PSE breast on right
Term
the two prominent myopathies that are a current concern in poultry production
Definition
-green muscle disease
-pale soft exudate
Term
what might be causing the increase in green muscle disease?
Definition
-wing flapping
-tougher sheath around pectoralis minor
Term
what might be causing the increase in Pale Soft Exudative (PSE)?
Definition
stress just before slaughter could be causing an increase in pale soft exudative
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