muscular

Question 1

Muscle overview

1. Irritability / Excitability
2. Contractility
3. Extensibility
4. Elasticity

Answer 1

1. ability to send and receive stimulus
2. ability to shorten
3. ability to lengthen
4. ability to stretch and return to normal length

Question 2

Muscle Types

smooth
1. * Location
2. * specefic
3. * Structure
4. * Movement

Answer 2

1. • Mainly in hollow internal organs
2. • Examples: Stomach, Urinary bladder, areas of respiration
3. • No striations, spindle shaped, single nucleus. Arranged in sheets or layers
4. • Involuntary. Moves things along a definite path. Contractions slow and sustained.

Question 3

Muscle Overview

Functions (4)

Answer 3

• Movement
• Maintain Posture
• Joint stabilization
• Heat Generation

Question 4

Muscle Types

Skeletal
1 Location
2 Structure
3 Movement
4 3 more

Answer 4

1. Most connected to the skeleton
2. • Striated, multinucleated
3. • Primarily Voluntary. Tires easily
4. • Largest of the muscle fiber type
5. • Provides strength and support
6. • Bundled together by connective tissue

Question 5

Muscle Types

cardiac
1. Location
2. Structure
3. Movement
4. blank

Answer 5

1. Heart
2. Striated. Branched, single nucleus. Joined by intercalated discs that contain gap junctions between cells and desmosomes to hold the fibers together during contractions
3. Involuntary. Contracts at a steady rate, pacemaker.
4. Nervous system activation

Question 6

Muscle Overview

Convert
All
their
muscles only

Answer 6

• Convert Chemical Energy into Mechanical Energy
• All muscles are elongated, therefore all cells are called fibers
• Their ability to contract depends on two types of myofilaments
• Muscles only Pull (contract), they do not push!