Muscles

Which of the following is not a characteristic of cardiac muscle?

Multi-nucleated

Muscles that move a body part (let's say a leg) away from midline are called

Abductors

Beneath which muscle will you find the sciatic nerve?

Biceps femoris m.

Which of the following is NOT a muscle of the head and neck?

Pectineus m.

The "cranial drawer" test is used in the diagnosis of injury to which body part?

Stifle

Which one of these muscles does not surround the femur?

Superficial pectoral m.

The sarcoplasmic reticulum stores

Calcium

The arrestor pili muscle is an example of _____________________ muscle tissue:

Multi-unit smooth

How many phosphate groups are present in ATP?

3

Agonist

Muscle or muscle group that directly produces a desired movement

Antagonist

Muscle or muscle group that directly opposes the action of an agonist.

Synergist

Skeletal muscle that contracts at the same time as an agonist and assists it in carrying out its function.

Fixator

Muscles that stabilize joints to allow other movements to take place.

Sarcomere

The basic, microscopic contracting unit of skeletal muscle.

Sarcolemma

Specialized term for the cell membrane of muscle cells

Sarcoplasmic reticulum

Storage organelle for calcium ions in muscle cells

Sarcoplasm

Specialized term for "cytoplasm" that is specific to muscle.

What molecule is released into the synaptic cleft at the neuromuscular junction to drive muscle contraction?

Acetylcholine

All of the following ions have a role in muscle contraction except:

Cl-

The clavicular remnant in the cat is found in which muscle?

Brachiocephalicus m.

The cephalic vein is found on the ___________ limb.

Thoracic

Which of the following muscles are found on the thoracic limb?

Biceps brachii m.

Energy currency (ATP) is needed for both skeletal muscle contraction and relaxation.

True

The aponeurosis between the two bellies of the rectus abdominus m. is called the

linea alba

Muscles that move a body part towards midline (let's say a leg) are called

Adductors

Neuromuscular junction

Sites where the ends of motor nerve fibers connect to muscle fibers.

Tendons

Structures that attach muscles to bones, and extension of the epimysium.

Internal intercostal muscles

Muscles responsible for pushing air out of the lungs, aka expiration.

External intercostal muscles

Muscles responsible for drawing air into the lungs, or inspiration.

Cutaneous trunci m.

Muscles located in the fascia beneath the skin; responsible for the "skin twitch."

Sinioatrial node

Location at which the electrical impulse enters the heart.

Actin

Thin protein filaments that attach to the Z lines.

Myosin

Thick protein filaments that appear to float in the middle of the sarcomere between parallel actin fibers.

The sartorius m., gracilis m., and the pectineus m. form the boundaries of the

Femoral triangle

A severe injury to the brachial plexus will result in an animal failing to bear weight on the affected __________________ limb.

Thoracic

Which of the following best describes the action of the Triceps brachii muscle?

Extends the thoracic limb

An example of an antagonist to the biceps brachii muscle would be?

Triceps brachii m.

Smooth muscle contractions increase intensity with stretching.

True

Gluteal muscles are routinely injected in large animals.

False

Oxygen is stored in muscle tissue within the

Myoglobin

Muscle atrophy is an increase in muscle volume/size.

False

The heart and visceral smooth muscle are subject to __________and __________ control.

Sympathetic; parasympathetic

The medial saphenous vein is located on the _____________ limb.

Pelvic