Muscle

SKELETAL MUSCLE

Transverse Cut

A

B

C

D

A: Epimysium

B: Perimysium

C: Endomysium

D: Fascicle

Transverse Cut

A

B

A: Perimysium

B: Endomysium

A

B

C

A

B

Longitudinal Cut

A

Skeletal muscle regularly arranged

A: Endomysium

A

B

Intrafusal FiberA

B

C

D

A: Skeletal muscle fibers.

B: Intrafusal fibers

C: Central non-striated area where nuclei are concentrated.

D: Capsule

Sarcomere

A: A-band

H: H-band

M: M-line

Z: Z-lines

B

C

D

AE

Neuromuscular Junction

A

B

C

A: Terminal bouton or motor end plate

B: Nerve axons.

C: Skeletal myofibers.

Tongue Skeletal MuscleA

B

C

D

Skeletal Muscle Irregularly Arranged

A: Circumvallate Papillae.

B: Von Ebner’s Gland.

C: Taste Bud

D: Irregularly arranged skeletal muscle.

CARDIAC MUSCLE

Cardiac Muscle

A

A

B

A: Bifurcations of the cardiac muscle

B: Intercalated discs

N: Centrally located nuclei.

A

A

B

C

SMOOTH MUSCLE

Longitudinal Cut

A

Smooth Muscle Regularly Arranged

A: Smooth muscle fiber.

Transverse Cut

A

Smooth Muscle Regularly Arranged

A: Smooth muscle myocyte.

CARDIOVASCULAR SMOOTH MUSCLE

Vascular Smooth Muscle

A

B

A

C

D

B

C

A: Tunica intima

B: Tunica media

C: Tunica adventitia

D: Skeletal muscle

DIGESTIVE SMOOTH MUSCLE

Intestinal Smooth Muscle

A

B

C

D

A: Muscularis externa

B: Inner circular layer of the muscularis externa.

C: Outer longitudinal layer of the muscularis externa.

D: Mucosa.

AB

C

Stomach Smooth Muscle

A

A: Muscularis externa

O: Inner oblique

C: Middle circular

L: Outer longitudinal

GP: Gastric gland.

M: Mucosa.

A

B

C

REPRODUCTIVE SMOOTH MUSCLE

Uterine Smooth Muscle

A

B

C

A: Endometrium

B: Uterine glands

C: Myometrium

B

A

Vaginal Smooth Muscle

A: The outer adventitial layer.

SM: Smooth muscle irregularly arranged.

LP: Lamina propria.

E: Stratified squamous epithelium.

A

B

C

URINARY TRACT SMOOTH MUSCLE

Ureter Smooth Muscle

B

C

A

A: Transitional epithelium or uroepithelium.

B: Inner longitudinal layer

C: Outer circular layer

C

BA