What is an articulation (joint), and why is it important?

An articulation is a connection between two bones. Joints allow movement, stability, and flexibility, and they can be classified as fibrous, cartilaginous, or synovial depending on their structure and mobility.

What are the main types of synovial joints?

Hinge joints – allow back-and-forth motion (e.g., elbow, knee). Ball-and-socket joints – allow movement in many directions (e.g., shoulder, hip). Pivot joints – allow rotation (e.g., neck). Gliding joints – allow sliding motion (e.g., wrist, ankl

How does a muscle contract at the cellular level?

Muscle contraction occurs when actin and myosin filaments slide past each other. Calcium ions trigger this interaction, and ATP provides the energy needed for the filaments to slide, shortening the muscle fiber.

What is the role of the neuromuscular junction in muscle contraction?

The neuromuscular junction is the connection between a motor neuron and a muscle fiber. The neuron releases acetylcholine, which triggers an electrical signal in the muscle, leading to calcium release and contraction of the muscle fiber.

Help

Options

focusNode

Didn't know it?
click below

Knew it?
click below

Don't Know

Remaining cards (0)

Know

retry

shuffle

restart

0:00

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

Physiology/Wk 7

Articulations & Muscle Contraction

Question	Answer
What is an articulation (joint), and why is it important?	An articulation is a connection between two bones. Joints allow movement, stability, and flexibility, and they can be classified as fibrous, cartilaginous, or synovial depending on their structure and mobility.
What are the main types of synovial joints?	Hinge joints – allow back-and-forth motion (e.g., elbow, knee). Ball-and-socket joints – allow movement in many directions (e.g., shoulder, hip). Pivot joints – allow rotation (e.g., neck). Gliding joints – allow sliding motion (e.g., wrist, ankl
How does a muscle contract at the cellular level?	Muscle contraction occurs when actin and myosin filaments slide past each other. Calcium ions trigger this interaction, and ATP provides the energy needed for the filaments to slide, shortening the muscle fiber.
What is the role of the neuromuscular junction in muscle contraction?	The neuromuscular junction is the connection between a motor neuron and a muscle fiber. The neuron releases acetylcholine, which triggers an electrical signal in the muscle, leading to calcium release and contraction of the muscle fiber.

Created by: ksdean4547

"Know" box contains:
Time elapsed:
Retries: