Chapter 9- Muscular system

lifting dumbbells is an example of isotonic contraction

Muscles can contract for long periods of time

What is another name for Irritability

A nerve that carries impulses from the brain and stimulates muscles to contract is a...

Acetylcholinesterase breaks down acetylcholine

which of the following muscles is voluntary?

isolated fiber contractions are continuous, even in a relaxed muscle

How many muscles are in the human body

the heart is an example of smooth muscle

the ability to be stretched is characteristic of which type(s) of muscle tissue

Duchenne muscular dystrophy is more common in females than in males

there are 1000 muscles in the body

calcium concentration in the sarcoplasm increases during skeletal muscle contraction

smooth muscle fibers are small and spindle shaped

the gluteus maximus extends a flexed thigh or hyperextends the thigh from a anatomical position

anterior aspect of the neck; flexes the head and neck

the sternocleidomastoid muscle recieves its name from its

what is the largest muscle in the body

the most efficient means of producing ATP for muscle contraction is

which of the following is not a function of the muscle

which muscle is referred to as the "smooth muscle"

posterior of the thigh; flexes lower leg

Cardiac muscle is found only in the...

when one muscle is contracting, other is...

motor end plates stores the neurotransmitter acetylcholine

muscles move body parts by

What kind of muscle pumps the heart?

Anterior aspect of the upper arm; flexes the forearm

an entire skeletal muscle is surrounded by

which of the following is NOT a basis for naming a muscle

Which two out of the muscles are involuntary

Which band contains only myosin that is NOT overlapped with actin myofilaments

a thin light colored myofilament is actin

Type of muscle contraction in which the muscle fibers produce increased tension; the muscle neither shortens/lengthens..

Troponin binds calcium ions in a smooth muscle causing contraction

a muscle is applied to a load that excedes the muscles maximum tension the muscle length won't change during contraction

What is the main function of the deltoid?

the muscle that is responsible for the majority of force when a movement is executed is antagonist

Muscle cells initiate nerve impulses

Each skeletal muscle fiber is controlled by a neuron at a single _______.

the cytoplasm within a muscle cell is called sarcolemma

skeletal muscles ______, you control them

the smooth muscle helps pump blood to the rest of the body

the ability to be elongated or stretched is contractability

The A bands of the sarcomere are made of myosin

a muscle that functions to stabilize a point or body position is a fixator

the quads extend the knee

What are the 3 basic muscle types found in the body

Which of the following muscle types is/are both voluntary and striated

the functional unit of contraction in a skeletal muscle fiber is the...