BIOL 121: Histology - Muscle + Nervous Tissue

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Last updated 11:08 PM on 4/26/26
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14 Terms

1
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3 Types of Muscle Tissue

  1. Skeletal

  2. Cardiac

  3. Smooth

2
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Characteristics of Each Muscle Tissue - Where are each of them found?

  1. Skeletal —> attach to bones, striated, and voluntary

  2. Cardiac —> composes heart wall, striated, and INvoluntary

  3. Smooth —> in blood vessels + other tube shaped organs, NONstriated, INvoluntary

3
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<p>What kind of muscle tissue is this? Label. Where is it found in the body?</p>

What kind of muscle tissue is this? Label. Where is it found in the body?

A - skeletal muscle fiber (one muscle cell)

B - muscle cell nuclei (syncytial)

Biceps, diaphragm

4
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<p>What kind of muscle tissue is this? Label + function. Where is it found in the body?</p>

What kind of muscle tissue is this? Label + function. Where is it found in the body?

Cardiac

A - Muscle cell nuclei

B - Intercalated disks - synchronizes signal through gap junctions which allow ions to flow freely between individual cells —> allows for unity

C - Striations

Heart

5
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What shape are the smooth muscle cells + their nuclei?

Spindle shaped cells, banana shaped nuclei

<p>Spindle shaped cells, banana shaped nuclei</p>
6
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<p>What kind of muscle tissue is this? Label. Where is it found in the body?</p>

What kind of muscle tissue is this? Label. Where is it found in the body?

Smooth muscle

Blood vessels (veins, arteries), esophagus, intestines

7
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<p>Label the vein, artery, and nerve</p>

Label the vein, artery, and nerve

A - nerve

B - artery

C - vein

8
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2 Cell Types in Nervous Tissue

  1. Neurons - conducting cells

  2. Glia - supportive/connecting cells

9
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Neurons have ______ and ______

axons, dendrites

<p>axons, dendrites</p>
10
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Motor End Plates

Terminus areas of the motor neurons + can touch many different muscle fibers

11
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<p>Label this image</p>

Label this image

A - bundle of axons

B - motor end plate

C - single axon

D - multiple synapses

E - bundle of muscle fibers

12
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<p>Label This Myelinated Peripheral Nerve (longitudinal): function?</p>

Label This Myelinated Peripheral Nerve (longitudinal): function?

A - Nodes of Ranvier: represent discontinuities in myelin sheath

B - Axon

C - Connective tissue

D - Myelin: protects axon, mimics myelin sheath, + insulates signal/charge

13
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<p>Label This Myelinated Peripheral Nerve (cross section)</p>

Label This Myelinated Peripheral Nerve (cross section)

A - Axon

B - Myelin

C - Connective tissue

14
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<p>Label: stratified squamous epithelium, taste pore, taste bud, + taste cell nuclei</p>

Label: stratified squamous epithelium, taste pore, taste bud, + taste cell nuclei

A - Taste bud

B - Taste pore

C - Nuclei of taste cells

D - Stratified squamous epithelium