Podcast
Questions and Answers
What is the purpose of the clavicle in mammals?
What is the purpose of the clavicle in mammals?
- To rotate the forelimbs backward
- To brace the scapula against the sternum (correct)
- To rotate the hind limbs forward
- To increase the efficiency of the hind limbs
Which stance is used by early reptiles and today's lizards, turtles, and salamanders?
Which stance is used by early reptiles and today's lizards, turtles, and salamanders?
- Fully-improved stance
- Self-improved stance
- Upright stance
- Spreading stance (correct)
What skeletal elements are present in the forelimbs of all tetrapods?
What skeletal elements are present in the forelimbs of all tetrapods?
- Scapula, radius, ulna, carpals, and metacarpals
- Clavicle, radius, ulna, carpals, metacarpals, and phalanges
- Humerus, ulna, carpals, metacarpals, and phalanges
- Humerus, radius, ulna, carpals, metacarpals, and phalanges (correct)
Which type of joint allows movement back and forth and up and down without rotation?
Which type of joint allows movement back and forth and up and down without rotation?
In mammals, what is the outcome of rotating the forelimbs backwards?
In mammals, what is the outcome of rotating the forelimbs backwards?
Which animals use the fully-improved 'upright' stance?
Which animals use the fully-improved 'upright' stance?
Which method of locomotion is characterized by the entire surface of the foot resting on the ground with each step?
Which method of locomotion is characterized by the entire surface of the foot resting on the ground with each step?
In which group of ungulates are the digits 3 and 4 retained as functional digits?
In which group of ungulates are the digits 3 and 4 retained as functional digits?
What type of foot structure do animals like cattle, goats, and pigs have due to bearing weight on two parallel axes?
What type of foot structure do animals like cattle, goats, and pigs have due to bearing weight on two parallel axes?
Which of the following mammals exemplifies digitigrade locomotion?
Which of the following mammals exemplifies digitigrade locomotion?
What is the term used to describe the walking style where animals bear weight on hoofs that are modified claws?
What is the term used to describe the walking style where animals bear weight on hoofs that are modified claws?
Which group of animals are known to have a mesaxonic foot structure in their limbs?
Which group of animals are known to have a mesaxonic foot structure in their limbs?
Which type of muscles allow side-to-side movement of the vertebral column and provide support and arching of the back in sea lions and walruses?
Which type of muscles allow side-to-side movement of the vertebral column and provide support and arching of the back in sea lions and walruses?
In which animals are the Hypaxial muscles crucial for supporting the abdomen, bending the vertebral column, and acting as the musculature of the tail?
In which animals are the Hypaxial muscles crucial for supporting the abdomen, bending the vertebral column, and acting as the musculature of the tail?
What is the function of the Integumentary muscle known as arrector pili in sea lions and walruses?
What is the function of the Integumentary muscle known as arrector pili in sea lions and walruses?
Which mammals have well-developed Mimetic muscles that are specialized for facial expressions?
Which mammals have well-developed Mimetic muscles that are specialized for facial expressions?
What skeletal element allows horses and cows to twitch their skin using a specific muscle?
What skeletal element allows horses and cows to twitch their skin using a specific muscle?
What modification in the circulatory system of mammals that dive to great depth helps them withstand high pressure and provide oxygen underwater?
What modification in the circulatory system of mammals that dive to great depth helps them withstand high pressure and provide oxygen underwater?
