Lecture 4: Histology III

Question 1

Which two muscles are striated?

Answer 1

Skeletal and Cardiac

Question 2

Skeletal muscle is surrounded by a connective tissue layer known as the:
A. Perichondrium
B. Perimysium
C. Periosteum
D. Epimysium

Answer 2

D. Epimysium

Question 3

The muscle belly can be subdivided into smaller units called ___

Answer 3

fasicles

Question 4

Each fascicle is surrounded by a connective tissue called the:
A. Perichondrium
B. Perimysium
C. Periosteum
D. Epimysium

Answer 4

B. Perimysium

Question 5

Muscle fibers are surrounded by a connective tissue known as the
A. Perichondrium
B. Perimysium
C. Periosteum
D. Epimysium
E. Endomysium

Answer 5

E. Endomysium

Question 6

Muscle belly is surrounded by the deep fascia, also known as the ____

Answer 6

epimysium

Question 7

Thin filaments are __ while thick filaments are ___

A. actin forming A bands
B. actin forming I bands
C. myosin forming A bands
D. myosin forming I bands

Answer 7

B., C

Question 8

Voluntary muscle is innervated by the ____ nervous system

Answer 8

PNS

Question 9

____: contractile units of the skeletal muscle

Answer 9

Sarcomere

Question 10

What type of neurons innervate the motor neurons?

Answer 10

Motor neurons

Question 11

The synaptic ends of peripheral nerve fibers form specialized synapses called _____

Answer 11

motor endplates

Question 12

What NT do motor units use?

Answer 12

Ach

Question 13

True or False: the motor unit = axon / N muscle fibers

Answer 13

T

Question 14

True or False: the motor unit = axon / N muscle fibers

Answer 14

True

Question 15

What type of fibers are found in cardiac muscle?
A. muscle fibers
B. collagen fibers
C. elastin fibers

Answer 15

A. muscle fibers

Question 16

Which type of muscle has 1 central nucleus/cell?
A. Skeletal
B. Cardiac
C. Smooth

Answer 16

B. Cardiac

Question 17

Which type of muscle has elongated cells with a central nucleus?
A. Skeletal
B. Cardiac
C. Smooth

Answer 17

C. Smooth

Question 18

True or False: Fine motor skills are associated with more motor plates while gross motor skills are associated with fewer motor plates

Answer 18

True

Question 19

Which is an example of whole (hollow) organ?
A. Intestine and stomach
B. Liver

Answer 19

A. Intestine and stomach

Question 20

Which is an example of a solid organ?
A. Intestine
B. Liver or Kidney

Answer 20

B. Liver or Kidney

Question 21

True or False: Muscle fibers are uninucleated and nuclei is located at periphery

Answer 21

False (multinucleated) - nuclei are located at cell periphery

Question 22

Is cardiac muscle multi-nucleated/uni?
Is the nucleus centrally located or peripherally?

Answer 22

Uni-nucleated, centrally located

Question 23

What are the two types of hollow organs?

Answer 23

Viscera and vessels

Question 24

Answer 24

Question 25

Answer 25

Question 26

Answer 26

Question 27

Answer 27