Exam 9 Flashcards
The pupil’s smooth muscle under a sympathetic response will have low myosin light chain ___ activity and ____ calmodulin
A. Kinase, inactive
B. Kinase, active
C. Phosphatase, inactive
D. Phosphatase, active
A. kinase, inactive
The anterior pituitary gland releases ___ endocrines while the posterior pituitary gland releases ____
A. 7-2
B. 8-2
C. 7-5
D. 8-5
B. 8-2
With her eyes closed, Basemah was doing squats at the RPAC where her knee angles initially decreased then increased. Which is the correct statement about her first squat?
A. Her flexor muscles were first stimulated then relaxed
B. Only a single muscle in each leg was necessary to complete this action
C. When done each day, it will cause her proportion of slow-glycolytic myofibers to increase
D. Only her motor cortex was required to complete this action
A. Her flexor muscles were first stimulated then relaxed
During ___ of smooth muscle, ____
A. Contraction, calcium is bound to myosin light chain kinase
B. Relaxation, the tropomyosin is not moved into a blocking position
C. Contraction, myosin light chain phosphatase is active
D. Relaxation, ATP is being removed from the actin’s crossbridge
B. Relaxation, the tropomyosin is not moved into a blocking position
Libby is training for an Ironman Triathlon (2.4mi swim, 112mi bike, 26.2mi run). After completing the training, they correctly know that
A. They will not have body-builder sized leg muscles
B. The proportion of their ATP made by substrate level phosphorylation will increase
C. The number of blood vessels in their legs will not be changed
D. Their production of myoglobin will be decreased
A. They will not have body-builder sized leg muscles
Which is a correct statement about aldosterone?
A. It can be downregulated by endocytosing its receptors
B. It will sometimes impact DNA transcription
C. It will interact with only one amphipathic protein
D. It is derived from cholesterol and has four carbon rings
D. It is derived from cholesterol and has four carbon rings
In a dream, Brutus is the size of a protein. He grabs onto an endocrine secreted by the hypothalamus. This endocrine binds to receptor in the anterior pituitary gland causing the release of a different endocrine that he now grabs and rides to a myofiber in a bicep where it binds to a receptor. He correctly realized that the first endocrine he grabbed onto was…
A. Luteinizing Hormone (LH)
B. Corticotropin releasing hormone (CRH)
C. Thyrotropin releasing hormone (TRH)
D. Growth hormone releasing hormone (GHRH)
D. Growth hormone releasing hormone (GHRH)
Which is a correct statement about the endocrine system?
A. Endocrines are sometimes released by structures utilizing smooth muscle
B. Peptide endocrines require plasma binding proteins
C. The impacts of endocrines rarely last louder than the impacts of neurotransmitters
D. Most steroids are lipophobic.
A. Endocrines are sometimes released by structures utilizing smooth muscle
To study for this assessment, your classmate Carmen created a Venn diagram for smooth and skeletal muscle. Consequently, they were able to correctly state that…
A. In both muscles, calcium leads to the movement of tropomyosin
B. Only in skeletal muscle, only one ATP is used per crossbridge cycle
C. Only in smooth muscle, the first movement of the crossbridge is to deflex
D. In both muscles, calcium levels within the cell/myofiber must increase significantly.
C. Only in smooth muscle, the first movement of the crossbridge is to deflex
Which is a correct statement about the spinal reflexes presented in lecture?
A. They were both activated by somatosensory input
B. Only one involved the contralateral extensor being contracted
C. The movement being shown by Dr. Bronson were caused by her motor cortex
D. All three statements are correct
D. All three statements are correct
Dr. Scarlet’s Patient X ingested a toxin that eliminated smooth muscle contraction. Consequently, Dr. S correctly stated that this toxin could be…
A. An agonist for calcium
B. Stopping the calcium-ATP pumps
C. Both statements are correct
D. Neither statement is correct
D. Neither statement is correct
Dr Gray’s Patient Y took unprescribed growth hormone (GH) to build their muscles. Now, Dr. G points out that they will also…
A. Cause growth-hormone releasing hormone (GHRH) levels to decrease
B. Increase endocrine release by the liver
C. Both statements are correct
D. Neither statement is correct
C. Both statements are correct.
Which is a correct statement about endocrines?
A. The ones released by the adrenal medulla are not steroids
B. Only one of the types relies on tyrosine
C. Both statements are correct
D. Neither statement is correct
A. The ones released by the adrenal medulla are not steroids
Which is a correct statement about the knee jerk reflex?
A. Muscle spindles detect the stretch
B. Only the efferent nervous system is crucial to its completion
C. Both statements are correct
D. Neither statement is correct
A. Muscle spindles detect the stretch
The Penn State Nittany Lion will have lots of cortisol released into its blood on Saturday. It will naturally get there because…
A. The adrenal gland must have released adrenocorticotropin hormone (ACTH)
B. The hypothalamus must have released corticotropin-releasing hormone (CRH)
C. Both statements are correct
D. Neither statement is correct
B. The hypothalamus must have released corticotropin-releasing hormone (CRH)
