Multiple Choice
Which type of muscle tissue is primarily responsible for causing vasoconstriction in blood vessels?
59
views
4. Tissues & Histology
Introduction to Muscle Tissue
Struggling with Anatomy & Physiology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which two concepts are fundamental to explaining how the body moves?
A
Muscle contraction and the sliding filament theory
B
Osmosis and diffusion
C
Cell division and mitosis
D
Homeostasis and negative feedback
Verified step by step guidance1
Understand the context of the question: The problem is asking about fundamental concepts that explain how the body moves, which is related to the musculoskeletal system and physiology of movement.
Review the concept of muscle contraction: Muscle contraction is the process by which muscle fibers generate tension and shorten, enabling movement. This involves the interaction of actin and myosin filaments within the sarcomere, the functional unit of a muscle.
Learn about the sliding filament theory: The sliding filament theory explains how muscle contraction occurs at the molecular level. It describes how myosin heads bind to actin filaments and pull them inward, causing the sarcomere to shorten and the muscle to contract.
Evaluate the other options: Osmosis and diffusion are processes related to the movement of substances across membranes, not directly related to body movement. Cell division and mitosis are processes of cellular replication, and homeostasis and negative feedback are mechanisms for maintaining internal balance, none of which directly explain body movement.
Conclude that muscle contraction and the sliding filament theory are the correct concepts because they directly describe the physiological mechanisms behind how the body moves.
4:47mWatch next
Master Intro to Muscle Tissue with a bite sized video explanation from Bruce Bryan
Start learningRelated Videos
Related Practice
Introduction to Muscle Tissue practice set
Problem sets built by lead tutorsExpert video explanations