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Question 1

What is the characteristic of parallel (straight) muscles?

Answer 1

Parallel muscles have a uniform width in which fascicles are parallel to the muscle axis.

Question 2

What are the shapes of parallel (straight) muscles?

Answer 2

The shapes of parallel (straight) muscles include strap (elongated), quadrilateral (four-sided), such as quadrate, rhomboidal, and trapezium.

Question 3

Where is the tendon located in fusiform muscles?

Answer 3

The tendon is found at the ends of the belly of the muscle in fusiform muscles.

Question 4

What is the characteristic of double belly muscles?

Answer 4

Double belly muscles have a tendon found between the two bellies.

Question 5

How are convergent (triangular) muscles shaped?

Answer 5

Convergent (triangular) muscles are fan-shaped, broad at one end and narrower at the other.

Question 6

What is the arrangement of fasciculi in circular (orbicular, sphincters) muscles?

Answer 6

Fasciculi in circular muscles are arranged in circles around an opening and act as sphincters.

Question 7

How are pennate (oblique fibers) muscles characterized?

Answer 7

Pennate muscles have muscle fibers attached to a tendon at an angle (like the barbs of a feather).

Question 8

What are the types of pennate muscles based on fiber arrangement?

Answer 8

Pennate muscles can be unipennate, bipennate, or multipennate.

Question 9

How are unipennate muscles characterized? And give an example

Answer 9

Unipennate muscles have fibers that come from only one side of the tendon.

Ex: extensor digitorum longus

Question 10

What is the defining feature of bipennate muscles? And give an example

Answer 10

Bipennate muscles have fibers that come from two sides of the tendon.

Ex: rectus femurs

Question 11

How are multipennate muscles distinguished from other types of pennate muscles? And provide an example

Answer 11

Multipennate muscles have fibers that come from three or more sides of the tendon.

Ex: Deltoid