Umaine BIO 208 Exam 2 Questions With Complete Solutions
The expanded ends of long bones are called - (ANSWER)Epiphysis
The prime function of osteoclasts is to - (ANSWER)Break down bone
Action Potentials: - (ANSWER)Do NOT vary in amplitude with the size of the stimulus that triggers the
A.P.'s
With an A.P. arriving at NMJ, which event occurs before the others? - (ANSWER)Ca++ enters presynaptic
terminal
If a contracted skeletal muscle is fully stretched, what happens most? - (ANSWER)The I-Band gets longer
Tropomyosin wraps itself around which other muscle element? - (ANSWER)F-actin
Soon after a person dies (and lose all ATPs), their skeletal muscles - (ANSWER)stiffen from actin + myosin
binding
How did Dr. Kass accomplish smooth movements with a low weight? - (ANSWER)High AP rate, using just
a few M.N.s
___ is primarily RED skeletal muscle? - (ANSWER)Soleus Muscle
Which of the following factors would NOT INcrease the strength of or chances that skeletal muscle will
contract? - (ANSWER)Increased permeability of sarcolemma to K+
Which of the meninges is fused to the skull? - (ANSWER)Dura Mater
Which brain compartment usually does the talking? - (ANSWER)Left cerebrum
Mature bone cells are termed - (ANSWER)Osteocytes
, Umaine BIO 208 Exam 2 Questions With Complete Solutions
A lack of exercise would - (ANSWER)Result in thin, brittle bones
When stress is applied to a bone - (ANSWER)Osteoblast activity increases
The normal loss of bone that occurs with aging is called - (ANSWER)Osteopenia
The longest and heaviest bone in the body is the - (ANSWER)Femur
Decreasing the angle between the bones is termed - (ANSWER)Flexion
Increasing the angle between the bones is termed - (ANSWER)Extension
When the epiphyseal plate is replaced by bone - (ANSWER)Long bones have reached their adult length
Nodding your head up and down is an example of - (ANSWER)Flexion and extension
Osteoclast activity is greater when - (ANSWER)Calcitonin is absent
Vitamin D is necessary for - (ANSWER)Absorption and transport of calcium and phosphate ions
The Parathyroid Hormone - (ANSWER)1. Stimulates osteoclast activity
2. Increases the rate of calcium absorption
3. Decreases the rate of calcium excretion
4. Stimulates osteoclast activity and decreases the rate of calcium excretion only
Cells that synthesize the organic components of the bone matrix are termed - (ANSWER)Osteoblasts
The expanded ends of long bones are called - (ANSWER)Epiphysis
The prime function of osteoclasts is to - (ANSWER)Break down bone
Action Potentials: - (ANSWER)Do NOT vary in amplitude with the size of the stimulus that triggers the
A.P.'s
With an A.P. arriving at NMJ, which event occurs before the others? - (ANSWER)Ca++ enters presynaptic
terminal
If a contracted skeletal muscle is fully stretched, what happens most? - (ANSWER)The I-Band gets longer
Tropomyosin wraps itself around which other muscle element? - (ANSWER)F-actin
Soon after a person dies (and lose all ATPs), their skeletal muscles - (ANSWER)stiffen from actin + myosin
binding
How did Dr. Kass accomplish smooth movements with a low weight? - (ANSWER)High AP rate, using just
a few M.N.s
___ is primarily RED skeletal muscle? - (ANSWER)Soleus Muscle
Which of the following factors would NOT INcrease the strength of or chances that skeletal muscle will
contract? - (ANSWER)Increased permeability of sarcolemma to K+
Which of the meninges is fused to the skull? - (ANSWER)Dura Mater
Which brain compartment usually does the talking? - (ANSWER)Left cerebrum
Mature bone cells are termed - (ANSWER)Osteocytes
, Umaine BIO 208 Exam 2 Questions With Complete Solutions
A lack of exercise would - (ANSWER)Result in thin, brittle bones
When stress is applied to a bone - (ANSWER)Osteoblast activity increases
The normal loss of bone that occurs with aging is called - (ANSWER)Osteopenia
The longest and heaviest bone in the body is the - (ANSWER)Femur
Decreasing the angle between the bones is termed - (ANSWER)Flexion
Increasing the angle between the bones is termed - (ANSWER)Extension
When the epiphyseal plate is replaced by bone - (ANSWER)Long bones have reached their adult length
Nodding your head up and down is an example of - (ANSWER)Flexion and extension
Osteoclast activity is greater when - (ANSWER)Calcitonin is absent
Vitamin D is necessary for - (ANSWER)Absorption and transport of calcium and phosphate ions
The Parathyroid Hormone - (ANSWER)1. Stimulates osteoclast activity
2. Increases the rate of calcium absorption
3. Decreases the rate of calcium excretion
4. Stimulates osteoclast activity and decreases the rate of calcium excretion only
Cells that synthesize the organic components of the bone matrix are termed - (ANSWER)Osteoblasts
