Muscular System - 7.3 Exam with
Complete Solutions
The thick myofilament in a muscle fiber is made of actin. - ANS-false
Bursae and tendon sheaths have the same function. - ANS-true
A bursae is a sack-like structure filled with:
Select one:
a. blood plasma
b. blood
c. synovial fluid
d. lymph - ANS-c
The connective tissue that attaches muscle to bone is called:
Select one:
a. origin
b. insertion
c. bursae
d. tendon - ANS-d
Skeletal muscle is also called striated muscle. - ANS-true
The muscle attachment to the more stationary bone is called the:
Select one:
a. tendon
b. origin
c. insertion
d. bursae - ANS-b
According to the sliding filament model, in order for a sarcomere to contract:
Select one:
a. bridges must form between actin and myosin
b. calcium must be released from the endoplasmic reticulum
c. ATP must be broken down for energy
d. all of the above - ANS-d
, In order for the necessary cross bridges to form, potassium must be released from the
endoplasmic reticulum. - ANS-false
The thick myofilament of the skeletal muscles is made of:
Select one:
a. Z-lines
b. actin
c. sarcomere
d. myosin - ANS-d
The insertion of the muscle is on the more stationary bone. - ANS-false
Intercalated disks are found in:
Select one:
a. cardiac muscle
b. skeletal muscle
c. smooth muscle
d. voluntary muscle - ANS-a
Involuntary muscles are also called visceral muscles. - ANS-true
Energy for muscle is provided when ATP is broken down. - ANS-true
Striations are found in:
Select one:
a. smooth muscle
b. skeletal muscle
c. cardiac muscle
d. both b and c above - ANS-d
Like skeletal muscles, cardiac muscles have intercalated disks. - ANS-false
Tendons anchor muscles to bones. - ANS-true
Z-lines mark the ends of individual sarcomeres. - ANS-true
The basic contractile unit of a skeletal muscle is the:
Select one:
a. Z-lines
b. myosin
c. sarcomere
d. actin - ANS-c
Complete Solutions
The thick myofilament in a muscle fiber is made of actin. - ANS-false
Bursae and tendon sheaths have the same function. - ANS-true
A bursae is a sack-like structure filled with:
Select one:
a. blood plasma
b. blood
c. synovial fluid
d. lymph - ANS-c
The connective tissue that attaches muscle to bone is called:
Select one:
a. origin
b. insertion
c. bursae
d. tendon - ANS-d
Skeletal muscle is also called striated muscle. - ANS-true
The muscle attachment to the more stationary bone is called the:
Select one:
a. tendon
b. origin
c. insertion
d. bursae - ANS-b
According to the sliding filament model, in order for a sarcomere to contract:
Select one:
a. bridges must form between actin and myosin
b. calcium must be released from the endoplasmic reticulum
c. ATP must be broken down for energy
d. all of the above - ANS-d
, In order for the necessary cross bridges to form, potassium must be released from the
endoplasmic reticulum. - ANS-false
The thick myofilament of the skeletal muscles is made of:
Select one:
a. Z-lines
b. actin
c. sarcomere
d. myosin - ANS-d
The insertion of the muscle is on the more stationary bone. - ANS-false
Intercalated disks are found in:
Select one:
a. cardiac muscle
b. skeletal muscle
c. smooth muscle
d. voluntary muscle - ANS-a
Involuntary muscles are also called visceral muscles. - ANS-true
Energy for muscle is provided when ATP is broken down. - ANS-true
Striations are found in:
Select one:
a. smooth muscle
b. skeletal muscle
c. cardiac muscle
d. both b and c above - ANS-d
Like skeletal muscles, cardiac muscles have intercalated disks. - ANS-false
Tendons anchor muscles to bones. - ANS-true
Z-lines mark the ends of individual sarcomeres. - ANS-true
The basic contractile unit of a skeletal muscle is the:
Select one:
a. Z-lines
b. myosin
c. sarcomere
d. actin - ANS-c
