Old Exams Flashcards
Connective tissue that connects bone to bone.
Ligament
Connective tissue that surrounds the muscle Cell
Endomysium
Connective tissue that surrounds the muscle
Epimysium
Connective tissue that connects muscle to bone
Tendon
Connective tissue that surrounds muscle bundles
Endomysium
Considered the contractile unit of striated muscle
sarcomere
Muscle cell
myofiber
Muscle cell membrane
sarcolemma
Organelle unique to muscle tissure
myofibril
Composed of thick and thin filaments
myofilament
In terms of contractile proteins, the H zone contains
myosin and actin
In terms of contractile proteins, the A Band contains
Only myosin
In terms of contractile proteins the I band contains
only actin
List two muscle contractile proteins
Myosin and Actin
List two muscle regulatory proteins
troponin and tropomyosin
List three muscle cytoskeleton proteins
Titin, Nebulin, and C protein
List four major nutrients found in muscle, that meat is considered a good source.
Protein, Iron, Vitamin B, Zinc
Explain how striated muscle cells become multi-nucleated.
Cell fuse together and overlap to become muscle fiber and in a muscle they become multi - nucleated.
What is the cervical ligament composed of that makes it so elastic?
is a cable like structure of elastin that hold the neck of ruminant animals.
Give the repeating amino acid sequence in collagen?
X - Glycine - Proline - Hydroxiproline - Glycine - X
T or F. The sarcolemma is a bi - layer phospholipid membrane.
True
T or F. Myogenic cells are differentiated in the embryonic phase of skeletal muscle development.
True
T or F. Collagen is most abundant protein in the animal body.
True
T or F. Myotubes are immature muscle fibers
True
T or F. Sarcomere length is constant
False
T or F. Synapes are formed when an axon ending of one neuron interdigitates with the dendrite of another neuron.
True
T or F. Intermolecular collagen cross linkages decrease as an animal ages
False
T or F. The sarcomlemma is composed of lipid material and protein.
True
T or F. Muscles can only contract
True
T or F. Myoblasts have the ability to fuse with one another
True
T or F. Proline is the most abundant amino acid in collagen.
False. Glycine
T or F. Increased intermolecular collagen cross linkages correlate with increase toughness.
True
BSE
Bovine Spongiform Encephalopathy
HRI
Hotel Restaurant Institution
ATP
Adenosine Triphosphate
CNS
Central Nervous System
myomesium, M - protein, and skelemin
M line
Double headed contractile protein
Myosin
Axon ending one neuron interdigitating with dendrites of another
Synapse
Small cytoplasmic vesicles containing protease
Lysosomes
anchors myosin to Z disk
Titin
nervous system consisting of brain and spinal cord
CNS
Monomeric form of actin
G - actin
Protein responsible for meat color
myoglobin
holds actin filaments in 3D array
Z disk
Extends from a band to Z disc extending the entire length of the thin filament
Nebulin
Flattened reservoirs that store Ca++
Sarcoplasmic reticulum
extends the length of F - actin occluding the myosin binding site
tropomyosin
encircles the thick filament
C - protein
contains the glycolytic enzymes
Sarcoplasm
long cylindrical nervous tissue structure
axon
enzymes found in lysosomes
cathespsins
ensheaths peripheral nerve fibers
Schwan cells
fibrous form of actin
F - actin
Cell membrane surrounding the muscle fiber and composed of protein and lipid material
sarcolemma
contains organelles and inclusion and is the cytoploasm of muscle cells is?
sarcoplasm
Botulism is caused by
blocking achetylcholine
Serves as a lubricant in joint and is a glycosaminoglycan
Hyaluronic acid
ATPase is an enzyme that hydrolyzes
ATP
Cholinesterase in an enzyme that hydrolyzes
Acetylcholine
Collagen intermolecular cross - linkage
Lead to insolubility of collagen fibers, Increase with age, affect meat tenderness
Water, protein, carbohydrate, and lipid make up approximately what percent of live mammalian skeletal muscle, respectively.
78, 18.5, 1, 3
A defect in which of the following proteins causes the disease known as muscular dystrophy?
Dystrophin
Circulates continuously, passes through all tissue organs, and lymph nodes, helps transport absorbed fatty acid
Lymph
Results in twice as many muscle fibers
Doubling muscling genotype
Results in hypertrophy of the hindeg, also means beautiful buttocks, results in tougher meat products, and is developed in sheep.
Callipyge genotype
What is the viscous substance that serves to lubricate juxtaposed joint surfaces?
Hyaluronic acid
Synthetic somatotropin is used to…
Increase leaness
The two calcium channel proteins involved in regulating calcium during depolarization of the T - tubules and sarcoplasmic reticulum are…
Dihydropyridine receptor and ryanodine receptor
T or F. The sarcolemma is a bi - layer phospholipid membrane.
True
T or F. Myogenic cells are differentiated in the embryonic phase of skeletal muscle development.
True
T or F. Collagen is the most abundant protein in the animal body.
True
This is due to Lack of ATP in post - mortem muscle and formation of actin - myosin cross - bridges
Rigor Mortis