You passed this Milestone 13 questions were answered correctly
2 questions were answered incorrectly
Which of the following best characterizes red skeletal muscles?
Red skeletal muscles are also sometimes referred to as "fast skeletal muscles" or "fast-twitch skeletal muscles. c
Red skeletal muscles contract more slowly than white skeletal muscles because they contain fewer mitochondria.
An olympic sprinter is highly reliant on red skeletal muscle because they contract very quickly for a short period of time.
Red skeletal muscles, such as those in your legs and back, allow for longer sustained activities such as standing, walking or running. CONCEPT
Types of Skeletal Muscle and Muscle Contraction Overview
A gymnast couldn't bend his knees after an accident. His doctors told him that the reason behind this is a tear in the knee muscle. Which of these muscle system disorders best represents the condition of the gymnast's knees?
Muscle strain
Tetanus
Muscular dystrophy c
Atrophy CONCEPT
Muscle System Disorders
Which of the following statements is true?
A tendon connects two muscles
A tendon connects a muscle to the bone.
A ligament connects a muscle to the bone. c
A tendon connects two bones. CONCEPT
oints
Which of the following statements is true?
Osteoblasts build new bone tissue and release calcium into the bloodstream as a byproduct. c
Osteoclasts build new bone tissue when there is too much calcium in the bloodstream.
Osteoclasts break down bone tissue to release calcium into the bloodstream.
Osteoblasts break down bone tissue to release calcium into the bloodstream. CONCEPT
Homeostasis and Bone Remodeling
Which of the following is a two-layered tissue that covers the bones?
Osteoblast
Periosteum
Osteon
Epiphysis CONCEPT
Bone Structure and Growth
Which of the following does the muscular system do?
c
Give the body its shape and structure
Help blood move through the body
Protect the body from outside factors
Remove waste from the bloodstream CONCEPT
Muscular System
Which of the following is the basic unit of contraction in a muscle?
c
Filament
Motor neuron c Motor unit
Sarcomere CONCEPT
Muscle Contractions: Micro Level
acts on groups of paired muscles. When one muscle contracts, the opposite muscle cannot contract because no stimulus is sent