Download Review of Muscle Tissues Skeletal Muscle Activity

Review of Muscle Tissues
1. All muscle cells are called ____________________.
2. The three types of muscle tissue are:
3. Muscles that move bones are called ___________________ because they are under conscious
control; all other muscle tissue is called ___________________because it cannot be consciously
controlled.
4. The connective tissue around each muscle fiber bundle has a ______________ and
____________ connected to it.
5.
A ____________________connects muscle to bone. Bones are connected to each other by
___________. _____________ protects bone from rubbing together and causing damage.
6.
All types of muscle tissue produce movement; skeletal muscle also maintains
___________________ and stabilizes __ _________________.
Skeletal Muscle Activity
1. One neuron and all the skeletal muscle cells it stimulates make up one _____________.
2. The position on the muscle cell where the nerve fiber connects is called the ____________.
3. Once a nerve has stimulated the muscle cell it will cause a temporary rush of ____________ into
the muscle cell.
Label the diagram.
Label the diagram.
filament
filament
Microscopic Anatomy of Skeletal Muscle
1. The plasma membrane of muscle cells is called the ____________________.
2. The ____________________, with alternating bands, make the cells look striated.
3. The threadlike proteins that cause contraction are the thick, or __________ filaments and the
thin, or __________ filaments. The _____________________ is specialized endoplasmic
reticulum; its role is to store and release ____________________ to trigger contraction.
Multiple Choice Practice:
1) Skeletal muscle is described by all of the following EXCEPT:
a) striated
b) voluntary
c) multinucleate
d) autorhythmic
2) The walls of hollow organs and some blood vessels contain this muscle tissue:
a) striated
b) skeletal
c) cardiac
d) smooth
3) A muscle fiber is a:
a) bundle of myofibrils
b) bundle of connective tissue
c) bundle of muscle fibers
d) muscle cell
4) The smallest contractile unit of skeletal muscle is a:
a) sarcomere
b) motor unit
c) synapse
d) thin filament
5) The major regulatory proteins in muscle tissue are:
a) myosin and tropomyosin
b) myosin and actin
c) actin and troponin
d) troponin and tropomyosin
6) Which of the following actions is caused by skeletal muscle:
a) constriction of blood vessels
b) heartbeat
c) dilation of pupil
d) eye movements
7) Which of the following does NOT occur in a muscle during contraction:
a) thick and thin filaments bind to each other
b) muscle fibers stretch
c) thick and thin filaments "slide" past each other
d) muscle fibers shorten
8) The stiffness of muscle tissue in rigor mortis partially results from:
a) excessive nerve activity on muscle
b) excessive calcium release in muscle
c) excessive lactic acid build up
d) excessive contraction of the fibers
9) Training excersizes such as jogging, swimming and aerobics have this effect on skeletal
muscle tissue:
a) increase number of mitochondria per muscle fiber
b) increase number of muscle fibers
c) increase number of motor units
d) increase number of skeletal muscles
10) Muscular dystrophy is a congenital disorder characterized by
a) skeletal muscle degeneration
b) excessive convulsions
c) shaking and trembling
d) only cardiac damage
11) Anabolic steroids have all these effects except:
a) builds muscle proteins
b) increases muscle strength
c) increases number of muscles in the body
d) can result in liver cancer and heart disease