Muscular Flashcards
What type of muscle is NOT striated?
Smooth muscle
A muscle or muscle group that opposes the action of a prime mover is?
antagonist
What are 2 actions of skeletal muscle?
To move bones and generate heat
Muscles that contract without the need for external stimulation
cardiac and smooth
Muscle that has intercalated disks
Cardiac
A muscle that moves a limb away from the midline is called
an abductor
A broad sheet of fibrous tissue that attaches two muscles or a muscle to a bone. Ex. Linea alba.
Aponeuroses
What are two types of smooth muscle?
Visceral smooth muscle and multiunit smooth muscle.
What is the origin, insertion and action of the splenius muscle?
Origin: Fascia along the middorsal line of the neck
Insertion: Lambdoidal ridge of the occipital bone.
Action :Lateral flexion of the head.
What are three functions of the muscular system?
- Produce movement of the body and parts.
- Maintains posture
- Produces heat
Skeletal muscle cells are______?
Multinucleated
3 different types of muscle make up the muscular system, what are they?
skeletal muscle, cardiac muscle, and smooth muscle
What are the 2 muscles that help in expiration?
internal intercostal and abdominal muscles
What are the main inspiratory muscles?
Diaphragm and the external intercostal muscles
what are the 3 phases of a single muscle fiber contraction
latent phase, contracting phase, relaxation phase
what are the 2 types muscles of respiration
inspiratory muscles, expiratory muscles
cardiac muscle is also know as ?
involuntary striated muscle
List the layers of the skeletal muscle
Muscle fiber, fascicle, endomysium, perimysium, epimysium.
What are the muscle’s attachement sites called and which is more stable?
Origin of the muscle and insertion of the muscle. Origin of the muscle is more stable.
What is the purpose of the intercalated disks?
They securely fasten the muscle cells together and transmit impulses from cell to cell in order to contract.
What muscle is found all over the body in places such as eyes, stomach and urinary bladder?
Smooth muscle
What muscle is controlled by the conscious mind and moves the bones of the skeleton so the animal can move?
Skeletal muscle
What is a synergist?
A muscle that contracts at the same time as a prime mover and assists it in carrying out its action.
what is special about the insertion of the muscle
it undergoes most of the movement when a muscle contracts.
the diaphragm is made of what type of muscle
Skeletal muscle
Which type of smooth muscle is large and relatively powerfull
Visceral smooth muscle
Cardiac and smooth muscle are voluntary or involuntary
Involuntary
T or F skeletal muscle is voluntary
True
What are 2 proteins that function in muscle contraction?
Actin and Myosin
What is a common neurotransmitter used to signal muscle contraction?
Acetylcholine
One nerve fiber and all the muscle fibers it innervates is?
Motor unit
What is the action of the skeletal muscle
To move the bones, and generate heat
The masseter muscles origin is ________arch, its insertion point is ramus of the _________. Without this muscle animals would not be able to elevate their mandible.
Zygomatic & mandible
which type of muscle does not have sarcomeres?
smooth
Which muscle has little or no attachment to bones?
cutaneous muscle
What is a sarcomere?
The area from 1 Z line to another Z line
T or F
Sarcomere contraction is All or Nothing?
True
what are two of the main muscles that raise the head and neck
splenius muscle
trapezius muscle
Muscles attach to bones at both ends by what?
tough, fibrous connective tissue band called tendons.
