5. What muscle cell types have the following features? a. striated and voluntary: b. striated and involuntary: c. nonstriated and involuntary:

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UpStudy AI · Accepted Answer

Certainly! Muscle cells can be classified based on their structure (striated vs. nonstriated) and control mechanism (voluntary vs. involuntary). Here's a breakdown of the different muscle cell types corresponding to each feature:

### a. Striated and Voluntary:
**Skeletal Muscle**

- **Structure:** Striated appearance due to the organized arrangement of actin and myosin filaments, which form visible bands under a microscope.
- **Control:** Voluntary control, meaning they are consciously controlled by the nervous system.
- **Function:** Responsible for body movements, posture maintenance, and generating heat through muscle contractions.
- **Location:** Attached to bones throughout the body.

### b. Striated and Involuntary:
**Cardiac Muscle**

- **Structure:** Striated like skeletal muscle, but the cells are interconnected by intercalated discs, which allow for synchronized contractions.
- **Control:** Involuntary control, operating without conscious thought.
- **Function:** Pumps blood throughout the circulatory system by contracting rhythmically and continuously.
- **Location:** Found exclusively in the walls of the heart.

### c. Nonstriated and Involuntary:
**Smooth Muscle**

- **Structure:** Nonstriated (smooth) appearance due to the lack of organized sarcomeres; cells are spindle-shaped with a single nucleus.
- **Control:** Involuntary control, regulated by the autonomic nervous system and various hormones.
- **Function:** Controls movements within internal organs, such as the gastrointestinal tract, blood vessels, bladder, and airways.
- **Location:** Found in the walls of hollow organs, blood vessels, and other internal structures.

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**Summary Table:**

| Feature                        | Muscle Type   | Characteristics                                               |
|--------------------------------|---------------|---------------------------------------------------------------|
| Striated and Voluntary         | Skeletal Muscle | Voluntary control, attached to bones, responsible for movement |
| Striated and Involuntary       | Cardiac Muscle  | Involuntary control, found in the heart, pumps blood          |
| Nonstriated and Involuntary    | Smooth Muscle   | Involuntary control, found in internal organs and vessels     |

Feel free to ask if you need more detailed information on any of these muscle types!
- **Striated and Voluntary:** Skeletal muscle - **Striated and Involuntary:** Cardiac muscle - **Nonstriated and Involuntary:** Smooth muscle

What muscle cell types have the following features?
a. striated and voluntary:
b. striated and involuntary:
c. nonstriated and involuntary:

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